CVE-2023-52447
published 2024-02-22CVE-2023-52447: In the Linux kernel, the following vulnerability has been resolved: bpf: Defer the free of inner map when necessary When updating or deleting an inner map in…
PriorityP427medium6.7CVSS 3.1
AVLACLPRHUINSUCHIHAH
EPSS
0.25%
16.2th percentile
In the Linux kernel, the following vulnerability has been resolved:
bpf: Defer the free of inner map when necessary
When updating or deleting an inner map in map array or map htab, the map
may still be accessed by non-sleepable program or sleepable program.
However bpf_map_fd_put_ptr() decreases the ref-counter of the inner map
directly through bpf_map_put(), if the ref-counter is the last one
(which is true for most cases), the inner map will be freed by
ops->map_free() in a kworker. But for now, most .map_free() callbacks
don't use synchronize_rcu() or its variants to wait for the elapse of a
RCU grace period, so after the invocation of ops->map_free completes,
the bpf program which is accessing the inner map may incur
use-after-free problem.
Fix the free of inner map by invoking bpf_map_free_deferred() after both
one RCU grace period and one tasks trace RCU grace period if the inner
map has been removed from the outer map before. The deferment is
accomplished by using call_rcu() or call_rcu_tasks_trace() when
releasing the last ref-counter of bpf map. The newly-added rcu_head
field in bpf_map shares the same storage space with work field to
reduce the size of bpf_map.
Affected
24 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.1.76-1 (bookworm) | linux 6.1.76-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= bba1dc0b55ac462d24ed1228ad49800c238cd6d7 < 90c445799fd1dc214d7c6279c144e33a35e29ef2 | 90c445799fd1dc214d7c6279c144e33a35e29ef2 |
| linux | linux | >= bba1dc0b55ac462d24ed1228ad49800c238cd6d7 < 37d98fb9c3144c0fddf7f6e99aece9927ac8dce6 | 37d98fb9c3144c0fddf7f6e99aece9927ac8dce6 |
| linux | linux | >= bba1dc0b55ac462d24ed1228ad49800c238cd6d7 < 62fca83303d608ad4fec3f7428c8685680bb01b0 | 62fca83303d608ad4fec3f7428c8685680bb01b0 |
| linux | linux | >= bba1dc0b55ac462d24ed1228ad49800c238cd6d7 < f91cd728b10c51f6d4a39957ccd56d1e802fc8ee | f91cd728b10c51f6d4a39957ccd56d1e802fc8ee |
| linux | linux | >= bba1dc0b55ac462d24ed1228ad49800c238cd6d7 < bfd9b20c4862f41d4590fde11d70a5eeae53dcc5 | bfd9b20c4862f41d4590fde11d70a5eeae53dcc5 |
| linux | linux | >= bba1dc0b55ac462d24ed1228ad49800c238cd6d7 < 876673364161da50eed6b472d746ef88242b2368 | 876673364161da50eed6b472d746ef88242b2368 |
| linux | linux_kernel | >= 0 < 5.10.216-1 | 5.10.216-1 |
| linux | linux_kernel | >= 0 < 6.1.76-1 | 6.1.76-1 |
| linux | linux_kernel | >= 0 < 6.6.15-1 | 6.6.15-1 |
| linux | linux_kernel | >= 0 < 6.6.15-1 | 6.6.15-1 |
| linux | linux_kernel | >= 0 < 5.15.0-112.122 | 5.15.0-112.122 |
| linux | linux_kernel | >= 5.11 < 5.15.153 | 5.15.153 |
| linux | linux_kernel | >= 5.16 < 6.1.75 | 6.1.75 |
| linux | linux_kernel | >= 5.9.0 < 5.10.214 | 5.10.214 |
| linux | linux_kernel | >= 6.2 < 6.6.14 | 6.6.14 |
| linux | linux_kernel | >= 6.7 < 6.7.2 | 6.7.2 |
| msrc | cbl2_hyperv-daemons_5.15.148.2-1_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_hyperv-daemons_5.15.153.1-1_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_kernel_5.15.158.1-1_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_kernel_5.15.164.1-1_on_cbl_mariner_2.0 | — | — |
| msrc | cbl_mariner_2.0_arm | — | — |
| msrc | cbl_mariner_2.0_x64 | — | — |
CVSS provenance
nvdv3.16.7MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
osv7.5HIGH
vendor_ubuntu7.5HIGH
vendor_debian6.7MEDIUM
vendor_msrc6.7MEDIUM
vendor_redhat6.7MEDIUM
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service. (CVE-2023-7042)
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CVE-2023-52447: In the Linux kernel, the following vulnerability has been resolved: bpf: Defer the free of inner map when necessary When updating or deleting an inner
osv·2024-02-22·CVSS 6.7
CVE-2023-52447 [MEDIUM] CVE-2023-52447: In the Linux kernel, the following vulnerability has been resolved: bpf: Defer the free of inner map when necessary When updating or deleting an inner
In the Linux kernel, the following vulnerability has been resolved: bpf: Defer the free of inner map when necessary When updating or deleting an inner map in map array or map htab, the map may still be accessed by non-sleepable program or sleepable program. However bpf_map_fd_put_ptr() decreases the ref-counter of the inner map directly through bpf_map_put(), if the ref-counter is the last one (which is true for most cases), the inner map will be freed by ops->map_free() in a kworker. But for now, most .map_free() callbacks don't use synchronize_rcu() or its variants to wait for the elapse of a RCU grace period, so after the invocation of ops->map_free completes, the bpf program which is accessing the inner map may incur use-after-free problem. Fix the free of inner map by invoking bpf_map
GHSA
GHSA-wvjr-h8mr-f8gw: In the Linux kernel, the following vulnerability has been resolved:
bpf: Defer the free of inner map when necessary
When updating or deleting an inn
ghsa_unreviewed·2024-02-22
CVE-2023-52447 [HIGH] CWE-416 GHSA-wvjr-h8mr-f8gw: In the Linux kernel, the following vulnerability has been resolved:
bpf: Defer the free of inner map when necessary
When updating or deleting an inn
In the Linux kernel, the following vulnerability has been resolved:
bpf: Defer the free of inner map when necessary
When updating or deleting an inner map in map array or map htab, the map
may still be accessed by non-sleepable program or sleepable program.
However bpf_map_fd_put_ptr() decreases the ref-counter of the inner map
directly through bpf_map_put(), if the ref-counter is the last one
(which is true for most cases), the inner map will be freed by
ops->map_free() in a kworker. But for now, most .map_free() callbacks
don't use synchronize_rcu() or its variants to wait for the elapse of a
RCU grace period, so after the invocation of ops->map_free completes,
the bpf program which is accessing the inner map may incur
use-after-free problem.
Fix the free of inner map by invoking bpf_
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2024-07-26·CVSS 6.3
CVE-2024-35785 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Ziming Zhang discovered that the DRM driver for VMware Virtual GPU did not
properly handle certain error conditions, leading to a NULL pointer
dereference. A local attacker could possibly trigger this vulnerability to
cause a denial of service. (CVE-2022-38096)
It was discovered that the ATA over Ethernet (AoE) driver in the Linux
kernel contained a race condition, leading to a use-after-free
vulnerability. An attacker could use this to cause a denial of service or
possibly execute arbitrary code. (CVE-2023-6270)
It was discovered that the Atheros 802.11ac wireless driver did not
properly validate certain data structures, leading to a NULL pointer
dereference. An attacker could possibly
Ubuntu
Linux kernel (IBM) vulnerabilities
vendor_ubuntu·2024-07-10·CVSS 7.0
CVE-2024-26895 [HIGH] Linux kernel (IBM) vulnerabilities
Title: Linux kernel (IBM) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the ATA over Ethernet (AoE) driver in the Linux
kernel contained a race condition, leading to a use-after-free
vulnerability. An attacker could use this to cause a denial of service or
possibly execute arbitrary code. (CVE-2023-6270)
It was discovered that the Atheros 802.11ac wireless driver did not
properly validate certain data structures, leading to a NULL pointer
dereference. An attacker could possibly use this to cause a denial of
service. (CVE-2023-7042)
It was discovered that the HugeTLB file system component of the Linux
Kernel contained a NULL pointer dereference vulnerability. A privileged
attacker could possibly use this to to cause a denial of s
Ubuntu
Linux kernel (HWE) vulnerabilities
vendor_ubuntu·2024-07-04·CVSS 7.0
CVE-2024-26889 [HIGH] Linux kernel (HWE) vulnerabilities
Title: Linux kernel (HWE) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the ATA over Ethernet (AoE) driver in the Linux
kernel contained a race condition, leading to a use-after-free
vulnerability. An attacker could use this to cause a denial of service or
possibly execute arbitrary code. (CVE-2023-6270)
It was discovered that the Atheros 802.11ac wireless driver did not
properly validate certain data structures, leading to a NULL pointer
dereference. An attacker could possibly use this to cause a denial of
service. (CVE-2023-7042)
It was discovered that the HugeTLB file system component of the Linux
Kernel contained a NULL pointer dereference vulnerability. A privileged
attacker could possibly use this to to cause a denial of s
Ubuntu
Linux kernel (Oracle) vulnerabilities
vendor_ubuntu·2024-06-26·CVSS 6.5
CVE-2023-52599 [MEDIUM] Linux kernel (Oracle) vulnerabilities
Title: Linux kernel (Oracle) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Alon Zahavi discovered that the NVMe-oF/TCP subsystem in the Linux kernel
did not properly validate H2C PDU data, leading to a null pointer
dereference vulnerability. A remote attacker could use this to cause a
denial of service (system crash). (CVE-2023-6356, CVE-2023-6535,
CVE-2023-6536)
Chenyuan Yang discovered that the RDS Protocol implementation in the Linux
kernel contained an out-of-bounds read vulnerability. An attacker could use
this to possibly cause a denial of service (system crash). (CVE-2024-23849)
It was discovered that a race condition existed in the Bluetooth subsystem
in the Linux kernel, leading to a null pointer dereference vulnerability. A
privileged local
Ubuntu
Linux kernel (HWE) vulnerabilities
vendor_ubuntu·2024-06-18·CVSS 6.5
CVE-2024-26594 [MEDIUM] Linux kernel (HWE) vulnerabilities
Title: Linux kernel (HWE) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Alon Zahavi discovered that the NVMe-oF/TCP subsystem in the Linux kernel
did not properly validate H2C PDU data, leading to a null pointer
dereference vulnerability. A remote attacker could use this to cause a
denial of service (system crash). (CVE-2023-6356, CVE-2023-6535,
CVE-2023-6536)
It was discovered that the Intel Data Streaming and Intel Analytics
Accelerator drivers in the Linux kernel allowed direct access to the
devices for unprivileged users and virtual machines. A local attacker could
use this to cause a denial of service. (CVE-2024-21823)
Chenyuan Yang discovered that the RDS Protocol implementation in the Linux
kernel contained an out-of-bounds read vulnerability.
Ubuntu
Linux kernel (NVIDIA) vulnerabilities
vendor_ubuntu·2024-06-14·CVSS 6.5
CVE-2023-52633 [MEDIUM] Linux kernel (NVIDIA) vulnerabilities
Title: Linux kernel (NVIDIA) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Alon Zahavi discovered that the NVMe-oF/TCP subsystem in the Linux kernel
did not properly validate H2C PDU data, leading to a null pointer
dereference vulnerability. A remote attacker could use this to cause a
denial of service (system crash). (CVE-2023-6356, CVE-2023-6535,
CVE-2023-6536)
It was discovered that the Intel Data Streaming and Intel Analytics
Accelerator drivers in the Linux kernel allowed direct access to the
devices for unprivileged users and virtual machines. A local attacker could
use this to cause a denial of service. (CVE-2024-21823)
Chenyuan Yang discovered that the RDS Protocol implementation in the Linux
kernel contained an out-of-bounds read vulnerabilit
Ubuntu
Linux kernel (Azure) vulnerabilities
vendor_ubuntu·2024-06-14·CVSS 7.0
CVE-2024-35829 [HIGH] Linux kernel (Azure) vulnerabilities
Title: Linux kernel (Azure) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the ATA over Ethernet (AoE) driver in the Linux
kernel contained a race condition, leading to a use-after-free
vulnerability. An attacker could use this to cause a denial of service or
possibly execute arbitrary code. (CVE-2023-6270)
It was discovered that the Atheros 802.11ac wireless driver did not
properly validate certain data structures, leading to a NULL pointer
dereference. An attacker could possibly use this to cause a denial of
service. (CVE-2023-7042)
It was discovered that the HugeTLB file system component of the Linux
Kernel contained a NULL pointer dereference vulnerability. A privileged
attacker could possibly use this to to cause a denial of
Ubuntu
Linux kernel (OEM) vulnerabilities
vendor_ubuntu·2024-06-12·CVSS 6.5
CVE-2023-52587 [MEDIUM] Linux kernel (OEM) vulnerabilities
Title: Linux kernel (OEM) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Alon Zahavi discovered that the NVMe-oF/TCP subsystem in the Linux kernel
did not properly validate H2C PDU data, leading to a null pointer
dereference vulnerability. A remote attacker could use this to cause a
denial of service (system crash). (CVE-2023-6356, CVE-2023-6535,
CVE-2023-6536)
Chenyuan Yang discovered that the RDS Protocol implementation in the Linux
kernel contained an out-of-bounds read vulnerability. An attacker could use
this to possibly cause a denial of service (system crash). (CVE-2024-23849)
It was discovered that a race condition existed in the Bluetooth subsystem
in the Linux kernel, leading to a null pointer dereference vulnerability. A
privileged local att
Ubuntu
Linux kernel (Intel IoTG) vulnerabilities
vendor_ubuntu·2024-06-11·CVSS 6.5
CVE-2024-26859 [MEDIUM] Linux kernel (Intel IoTG) vulnerabilities
Title: Linux kernel (Intel IoTG) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Zheng Wang discovered that the Broadcom FullMAC WLAN driver in the Linux
kernel contained a race condition during device removal, leading to a use-
after-free vulnerability. A physically proximate attacker could possibly
use this to cause a denial of service (system crash). (CVE-2023-47233)
It was discovered that the ATA over Ethernet (AoE) driver in the Linux
kernel contained a race condition, leading to a use-after-free
vulnerability. An attacker could use this to cause a denial of service or
possibly execute arbitrary code. (CVE-2023-6270)
It was discovered that the Atheros 802.11ac wireless driver did not
properly validate certain data structures, leading to a NULL poin
Ubuntu
Linux kernel (AWS) vulnerabilities
vendor_ubuntu·2024-06-11·CVSS 7.0
CVE-2024-26804 [HIGH] Linux kernel (AWS) vulnerabilities
Title: Linux kernel (AWS) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the ATA over Ethernet (AoE) driver in the Linux
kernel contained a race condition, leading to a use-after-free
vulnerability. An attacker could use this to cause a denial of service or
possibly execute arbitrary code. (CVE-2023-6270)
It was discovered that the Atheros 802.11ac wireless driver did not
properly validate certain data structures, leading to a NULL pointer
dereference. An attacker could possibly use this to cause a denial of
service. (CVE-2023-7042)
It was discovered that the HugeTLB file system component of the Linux
Kernel contained a NULL pointer dereference vulnerability. A privileged
attacker could possibly use this to to cause a denial of s
Ubuntu
Linux kernel (NVIDIA) vulnerabilities
vendor_ubuntu·2024-06-11·CVSS 7.0
CVE-2024-26859 [HIGH] Linux kernel (NVIDIA) vulnerabilities
Title: Linux kernel (NVIDIA) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the ATA over Ethernet (AoE) driver in the Linux
kernel contained a race condition, leading to a use-after-free
vulnerability. An attacker could use this to cause a denial of service or
possibly execute arbitrary code. (CVE-2023-6270)
It was discovered that the Atheros 802.11ac wireless driver did not
properly validate certain data structures, leading to a NULL pointer
dereference. An attacker could possibly use this to cause a denial of
service. (CVE-2023-7042)
It was discovered that the HugeTLB file system component of the Linux
Kernel contained a NULL pointer dereference vulnerability. A privileged
attacker could possibly use this to to cause a denial o
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2024-06-11·CVSS 6.5
CVE-2024-35842 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Alon Zahavi discovered that the NVMe-oF/TCP subsystem in the Linux kernel
did not properly validate H2C PDU data, leading to a null pointer
dereference vulnerability. A remote attacker could use this to cause a
denial of service (system crash). (CVE-2023-6356, CVE-2023-6535,
CVE-2023-6536)
Chenyuan Yang discovered that the RDS Protocol implementation in the Linux
kernel contained an out-of-bounds read vulnerability. An attacker could use
this to possibly cause a denial of service (system crash). (CVE-2024-23849)
It was discovered that a race condition existed in the Bluetooth subsystem
in the Linux kernel, leading to a null pointer dereference vulnerability. A
privileged local attacker
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2024-06-10·CVSS 7.0
CVE-2024-26751 [HIGH] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the ATA over Ethernet (AoE) driver in the Linux
kernel contained a race condition, leading to a use-after-free
vulnerability. An attacker could use this to cause a denial of service or
possibly execute arbitrary code. (CVE-2023-6270)
It was discovered that the Atheros 802.11ac wireless driver did not
properly validate certain data structures, leading to a NULL pointer
dereference. An attacker could possibly use this to cause a denial of
service. (CVE-2023-7042)
It was discovered that the HugeTLB file system component of the Linux
Kernel contained a NULL pointer dereference vulnerability. A privileged
attacker could possibly use this to to cause a denial of service
Ubuntu
Linux kernel (ARM laptop) vulnerabilities
vendor_ubuntu·2024-06-10·CVSS 6.5
CVE-2023-52672 [MEDIUM] Linux kernel (ARM laptop) vulnerabilities
Title: Linux kernel (ARM laptop) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Alon Zahavi discovered that the NVMe-oF/TCP subsystem in the Linux kernel
did not properly validate H2C PDU data, leading to a null pointer
dereference vulnerability. A remote attacker could use this to cause a
denial of service (system crash). (CVE-2023-6356, CVE-2023-6535,
CVE-2023-6536)
It was discovered that the Intel Data Streaming and Intel Analytics
Accelerator drivers in the Linux kernel allowed direct access to the
devices for unprivileged users and virtual machines. A local attacker could
use this to cause a denial of service. (CVE-2024-21823)
Chenyuan Yang discovered that the RDS Protocol implementation in the Linux
kernel contained an out-of-bounds read vulnerab
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2024-06-07·CVSS 7.0
CVE-2024-26787 [HIGH] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the ATA over Ethernet (AoE) driver in the Linux
kernel contained a race condition, leading to a use-after-free
vulnerability. An attacker could use this to cause a denial of service or
possibly execute arbitrary code. (CVE-2023-6270)
It was discovered that the Atheros 802.11ac wireless driver did not
properly validate certain data structures, leading to a NULL pointer
dereference. An attacker could possibly use this to cause a denial of
service. (CVE-2023-7042)
It was discovered that the HugeTLB file system component of the Linux
Kernel contained a NULL pointer dereference vulnerability. A privileged
attacker could possibly use this to to cause a denial of service
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2024-06-07·CVSS 6.5
CVE-2024-26631 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Alon Zahavi discovered that the NVMe-oF/TCP subsystem in the Linux kernel
did not properly validate H2C PDU data, leading to a null pointer
dereference vulnerability. A remote attacker could use this to cause a
denial of service (system crash). (CVE-2023-6356, CVE-2023-6535,
CVE-2023-6536)
It was discovered that the Intel Data Streaming and Intel Analytics
Accelerator drivers in the Linux kernel allowed direct access to the
devices for unprivileged users and virtual machines. A local attacker could
use this to cause a denial of service. (CVE-2024-21823)
Chenyuan Yang discovered that the RDS Protocol implementation in the Linux
kernel contained an out-of-bounds read vulnerability. An att
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2024-06-07·CVSS 7.0
CVE-2024-26787 [HIGH] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the ATA over Ethernet (AoE) driver in the Linux
kernel contained a race condition, leading to a use-after-free
vulnerability. An attacker could use this to cause a denial of service or
possibly execute arbitrary code. (CVE-2023-6270)
It was discovered that the Atheros 802.11ac wireless driver did not
properly validate certain data structures, leading to a NULL pointer
dereference. An attacker could possibly use this to cause a denial of
service. (CVE-2023-7042)
It was discovered that the HugeTLB file system component of the Linux
Kernel contained a NULL pointer dereference vulnerability. A privileged
attacker could possibly use this to to cause a denial of service
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2024-06-07·CVSS 6.5
CVE-2023-52617 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Alon Zahavi discovered that the NVMe-oF/TCP subsystem in the Linux kernel
did not properly validate H2C PDU data, leading to a null pointer
dereference vulnerability. A remote attacker could use this to cause a
denial of service (system crash). (CVE-2023-6356, CVE-2023-6535,
CVE-2023-6536)
Chenyuan Yang discovered that the RDS Protocol implementation in the Linux
kernel contained an out-of-bounds read vulnerability. An attacker could use
this to possibly cause a denial of service (system crash). (CVE-2024-23849)
It was discovered that a race condition existed in the Bluetooth subsystem
in the Linux kernel, leading to a null pointer dereference vulnerability. A
privileged local attacker
Ubuntu
Linux kernel (OEM) vulnerabilities
vendor_ubuntu·2024-03-11·CVSS 7.5
CVE-2023-52438 [HIGH] Linux kernel (OEM) vulnerabilities
Title: Linux kernel (OEM) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Pratyush Yadav discovered that the Xen network backend implementation in
the Linux kernel did not properly handle zero length data request, leading
to a null pointer dereference vulnerability. An attacker in a guest VM
could possibly use this to cause a denial of service (host domain crash).
(CVE-2023-46838)
It was discovered that the Habana's AI Processors driver in the Linux
kernel did not properly initialize certain data structures before passing
them to user space. A local attacker could use this to expose sensitive
information (kernel memory). (CVE-2023-50431)
Murray McAllister discovered that the VMware Virtual GPU DRM driver in the
Linux kernel did not properly handle memor
Red Hat
kernel: bpf: Defer the free of inner map when necessary
vendor_redhat·2024-02-22·CVSS 6.7
CVE-2023-52447 [MEDIUM] kernel: bpf: Defer the free of inner map when necessary
kernel: bpf: Defer the free of inner map when necessary
In the Linux kernel, the following vulnerability has been resolved:
bpf: Defer the free of inner map when necessary
When updating or deleting an inner map in map array or map htab, the map
may still be accessed by non-sleepable program or sleepable program.
However bpf_map_fd_put_ptr() decreases the ref-counter of the inner map
directly through bpf_map_put(), if the ref-counter is the last one
(which is true for most cases), the inner map will be freed by
ops->map_free() in a kworker. But for now, most .map_free() callbacks
don't use synchronize_rcu() or its variants to wait for the elapse of a
RCU grace period, so after the invocation of ops->map_free completes,
the bpf program which is accessing the inner map may incur
use-after-fr
Microsoft
bpf: Defer the free of inner map when necessary
vendor_msrc·2024-02-13·CVSS 6.7
CVE-2023-52447 [MEDIUM] CWE-416 bpf: Defer the free of inner map when necessary
bpf: Defer the free of inner map when necessary
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Mariner: Mariner
Linux: Linux
Customer Action Required: Yes
Remediation: CBL-Mariner Releases
Reference: https://learn.microso
Debian
CVE-2023-52447: linux - In the Linux kernel, the following vulnerability has been resolved: bpf: Defer ...
vendor_debian·2023·CVSS 6.7
CVE-2023-52447 [MEDIUM] CVE-2023-52447: linux - In the Linux kernel, the following vulnerability has been resolved: bpf: Defer ...
In the Linux kernel, the following vulnerability has been resolved: bpf: Defer the free of inner map when necessary When updating or deleting an inner map in map array or map htab, the map may still be accessed by non-sleepable program or sleepable program. However bpf_map_fd_put_ptr() decreases the ref-counter of the inner map directly through bpf_map_put(), if the ref-counter is the last one (which is true for most cases), the inner map will be freed by ops->map_free() in a kworker. But for now, most .map_free() callbacks don't use synchronize_rcu() or its variants to wait for the elapse of a RCU grace period, so after the invocation of ops->map_free completes, the bpf program which is accessing the inner map may incur use-after-free problem. Fix the free of inner map by invoking bpf_map
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/37d98fb9c3144c0fddf7f6e99aece9927ac8dce6https://git.kernel.org/stable/c/62fca83303d608ad4fec3f7428c8685680bb01b0https://git.kernel.org/stable/c/876673364161da50eed6b472d746ef88242b2368https://git.kernel.org/stable/c/90c445799fd1dc214d7c6279c144e33a35e29ef2https://git.kernel.org/stable/c/bfd9b20c4862f41d4590fde11d70a5eeae53dcc5https://git.kernel.org/stable/c/f91cd728b10c51f6d4a39957ccd56d1e802fc8eehttps://git.kernel.org/stable/c/37d98fb9c3144c0fddf7f6e99aece9927ac8dce6https://git.kernel.org/stable/c/62fca83303d608ad4fec3f7428c8685680bb01b0https://git.kernel.org/stable/c/876673364161da50eed6b472d746ef88242b2368https://git.kernel.org/stable/c/90c445799fd1dc214d7c6279c144e33a35e29ef2https://git.kernel.org/stable/c/bfd9b20c4862f41d4590fde11d70a5eeae53dcc5https://git.kernel.org/stable/c/f91cd728b10c51f6d4a39957ccd56d1e802fc8eehttps://lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlhttps://cert-portal.siemens.com/productcert/html/ssa-265688.html
2024-02-22
Published