CVE-2023-52629
published 2024-03-29CVE-2023-52629: In the Linux kernel, the following vulnerability has been resolved: sh: push-switch: Reorder cleanup operations to avoid use-after-free bug The original code…
PriorityP339high8.4CVSS 3.1
AVLACLPRNUINSUCHIHAH
EPSS
0.24%
15.3th percentile
In the Linux kernel, the following vulnerability has been resolved:
sh: push-switch: Reorder cleanup operations to avoid use-after-free bug
The original code puts flush_work() before timer_shutdown_sync()
in switch_drv_remove(). Although we use flush_work() to stop
the worker, it could be rescheduled in switch_timer(). As a result,
a use-after-free bug can occur. The details are shown below:
(cpu 0) | (cpu 1)
switch_drv_remove() |
flush_work() |
... | switch_timer // timer
| schedule_work(&psw->work)
timer_shutdown_sync() |
... | switch_work_handler // worker
kfree(psw) // free |
| psw->state = 0 // use
This patch puts timer_shutdown_sync() before flush_work() to
mitigate the bugs. As a result, the worker and timer will be
stopped safely before the deallocate operations.
Affected
12 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.5.6-1 (forky) | linux 6.5.6-1 (forky) |
| linux | linux | — | — |
| linux | linux | >= 9f5e8eee5cfe1328660c71812d87c2a67bda389f < 610dbd8ac271aa36080aac50b928d700ee3fe4de | 610dbd8ac271aa36080aac50b928d700ee3fe4de |
| linux | linux | >= 9f5e8eee5cfe1328660c71812d87c2a67bda389f < 246f80a0b17f8f582b2c0996db02998239057c65 | 246f80a0b17f8f582b2c0996db02998239057c65 |
| linux | linux_kernel | >= 0 < 6.5.6-1 | 6.5.6-1 |
| linux | linux_kernel | >= 0 < 6.5.6-1 | 6.5.6-1 |
| linux | linux_kernel | >= 0 < 5.4.0-193.213 | 5.4.0-193.213 |
| linux | linux_kernel | >= 0 < 5.15.0-119.129 | 5.15.0-119.129 |
| linux | linux_kernel | >= 0 < 4.4.0-258.292 | 4.4.0-258.292 |
| linux | linux_kernel | >= 0 < 4.15.0-228.240 | 4.15.0-228.240 |
| linux | linux_kernel | >= 2.6.20 < 6.5.4 | 6.5.4 |
| msrc | cbl2_kernel_5.15.182.1-1_on_cbl_mariner_2.0 | — | — |
CVSS provenance
nvdv3.18.4HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
osv8.4HIGH
vendor_debian8.4HIGH
vendor_msrc8.4HIGH
vendor_redhat8.4HIGH
vendor_ubuntu8.4HIGH
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It was discovered that a race condition existed in the Bluetooth subsystem
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privileged local attacker could use this to possibly cause a denial of
service (system crash). (CVE-2024-24860)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- SuperH RISC architecture;
- MMC subsystem;
- Network drivers;
- SCSI drivers;
- GFS2 file system;
- IPv4 networking;
- IPv6 networking;
- HD-audio driver;
(CVE-2024-26830, CVE-2024-39484, CVE-2024-36901, CVE-2024-26929,
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Yuxuan Hu discovered that the Bluetooth RFCOMM protocol driver in the Linux
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An attacker could possibly use this to cause a denial of service (system
crash). (CVE-2024-22099)
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 could use this to possibly cause a denial of
service (system crash). (CVE-2024-24860)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
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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 could use this to possibly cause a denial of
service (system crash). (CVE-2024-24860)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- SuperH RISC architecture;
- MMC subsystem;
- Network drivers;
- SCSI drivers;
- GFS2 file system;
- IPv4 networking;
- IPv6 networking;
- HD-audio driver;
(CVE-2024-26830, CVE-2024-39484, CVE-2024-36901, CVE-2024-26929,
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linux-azure-5.4 vulnerabilities
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 could use this to possibly cause a denial of
service (system crash). (CVE-2024-24860)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- SuperH RISC architecture;
- MMC subsystem;
- Network drivers;
- SCSI drivers;
- GFS2 file system;
- IPv4 networking;
- IPv6 networking;
- HD-audio driver;
(CVE-2024-26830, CVE-2024-39484, CVE-2024-36901, CVE-2024-26929,
CVE-2024-26921, CVE-2021-46926, CVE-2023-52629, CVE-2023-52760)
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CVE-2024-26921 [HIGH] linux-oracle-5.15 vulnerabilities
linux-oracle-5.15 vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- SuperH RISC architecture;
- User-Mode Linux (UML);
- MMC subsystem;
- Network drivers;
- GFS2 file system;
- IPv4 networking;
- IPv6 networking;
(CVE-2024-26921, CVE-2023-52629, CVE-2024-26680, CVE-2024-26830,
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Yuxuan Hu discovered that the Bluetooth RFCOMM protocol driver in the Linux
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An attacker could possibly use this to cause a denial of service (system
crash). (CVE-2024-22099)
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 could use this to possibly cause a denial of
service (system crash). (CVE-2024-24860)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- SuperH RISC architecture;
- User-Mode Linux (UML);
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Yuxuan Hu discovered that the Bluetooth RFCOMM protocol driver in the Linux
Kernel contained a race condition, leading to a NULL pointer dereference.
An attacker could possibly use this to cause a denial of service (system
crash). (CVE-2024-22099)
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 could use this to possibly cause a denial of
service (system crash). (CVE-2024-24860)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- SuperH RISC architecture;
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Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- SuperH RISC architecture;
- User-Mode Linux (UML);
- MMC subsystem;
- Network drivers;
- GFS2 file system;
- IPv4 networking;
- IPv6 networking;
(CVE-2024-26921, CVE-2023-52629, CVE-2024-26680, CVE-2024-26830,
CVE-2024-39484, CVE-2024-39292, CVE-20
OSV
linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities
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CVE-2024-22099 [MEDIUM] linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities
linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities
Yuxuan Hu discovered that the Bluetooth RFCOMM protocol driver in the Linux
Kernel contained a race condition, leading to a NULL pointer dereference.
An attacker could possibly use this to cause a denial of service (system
crash). (CVE-2024-22099)
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 could use this to possibly cause a denial of
service (system crash). (CVE-2024-24860)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- SuperH RISC architecture;
- User-Mode Linu
OSV
linux, linux-aws, linux-azure, linux-bluefield, linux-gcp, linux-gcp-5.4, linux-gkeop, linux-hwe-5.4, linux-ibm, linux-ibm-5.4, linux-kvm, linux-oracle, linux-oracle-5.4, linux-raspi, linux-xilinx-zyn
osv·2024-08-21·CVSS 5.5
CVE-2024-24860 [MEDIUM] linux, linux-aws, linux-azure, linux-bluefield, linux-gcp, linux-gcp-5.4, linux-gkeop, linux-hwe-5.4, linux-ibm, linux-ibm-5.4, linux-kvm, linux-oracle, linux-oracle-5.4, linux-raspi, linux-xilinx-zyn
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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 could use this to possibly cause a denial of
service (system crash). (CVE-2024-24860)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- SuperH RISC architecture;
- MMC subsystem;
- Network drivers;
- SCSI drivers;
- GFS2 file system;
- IPv4 networking;
- IPv6 networkin
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osv·2024-08-21·CVSS 5.5
CVE-2024-22099 [MEDIUM] linux, linux-gcp, linux-gcp-4.15, linux-hwe, linux-kvm vulnerabilities
linux, linux-gcp, linux-gcp-4.15, linux-hwe, linux-kvm vulnerabilities
Yuxuan Hu discovered that the Bluetooth RFCOMM protocol driver in the Linux
Kernel contained a race condition, leading to a NULL pointer dereference.
An attacker could possibly use this to cause a denial of service (system
crash). (CVE-2024-22099)
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 could use this to possibly cause a denial of
service (system crash). (CVE-2024-24860)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- SuperH RISC architecture;
- User-
GHSA
GHSA-384v-9gx5-rmx4: In the Linux kernel, the following vulnerability has been resolved:
sh: push-switch: Reorder cleanup operations to avoid use-after-free bug
The orig
ghsa_unreviewed·2024-03-29
CVE-2023-52629 [HIGH] CWE-416 GHSA-384v-9gx5-rmx4: In the Linux kernel, the following vulnerability has been resolved:
sh: push-switch: Reorder cleanup operations to avoid use-after-free bug
The orig
In the Linux kernel, the following vulnerability has been resolved:
sh: push-switch: Reorder cleanup operations to avoid use-after-free bug
The original code puts flush_work() before timer_shutdown_sync()
in switch_drv_remove(). Although we use flush_work() to stop
the worker, it could be rescheduled in switch_timer(). As a result,
a use-after-free bug can occur. The details are shown below:
(cpu 0) | (cpu 1)
switch_drv_remove() |
flush_work() |
... | switch_timer // timer
| schedule_work(&psw->work)
timer_shutdown_sync() |
... | switch_work_handler // worker
kfree(psw) // free |
| psw->state = 0 // use
This patch puts timer_shutdown_sync() before flush_work() to
mitigate the bugs. As a result, the worker and timer will be
stopped safely before the deallocate operations.
OSV
CVE-2023-52629: In the Linux kernel, the following vulnerability has been resolved: sh: push-switch: Reorder cleanup operations to avoid use-after-free bug The origin
osv·2024-03-29·CVSS 8.4
CVE-2023-52629 [HIGH] CVE-2023-52629: In the Linux kernel, the following vulnerability has been resolved: sh: push-switch: Reorder cleanup operations to avoid use-after-free bug The origin
In the Linux kernel, the following vulnerability has been resolved: sh: push-switch: Reorder cleanup operations to avoid use-after-free bug The original code puts flush_work() before timer_shutdown_sync() in switch_drv_remove(). Although we use flush_work() to stop the worker, it could be rescheduled in switch_timer(). As a result, a use-after-free bug can occur. The details are shown below: (cpu 0) | (cpu 1) switch_drv_remove() | flush_work() | ... | switch_timer // timer | schedule_work(&psw->work) timer_shutdown_sync() | ... | switch_work_handler // worker kfree(psw) // free | | psw->state = 0 // use This patch puts timer_shutdown_sync() before flush_work() to mitigate the bugs. As a result, the worker and timer will be stopped safely before the deallocate operations.
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2024-09-18·CVSS 6.3
CVE-2024-35825 [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)
Gui-Dong Han discovered that the software RAID driver in the Linux kernel
contained a race condition, leading to an integer overflow vulnerability. A
privileged attacker could possibly use this to cause a denial of service
(system crash). (CVE-2024-23307)
Chenyuan Yang discovered that the CEC driver driver in the Linux kernel
contained a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (s
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2024-09-12·CVSS 4.6
CVE-2024-39509 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
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 could use this to possibly cause a denial of
service (system crash). (CVE-2024-24860)
It was discovered that the JFS file system contained an out-of-bounds read
vulnerability when printing xattr debug information. A local attacker could
use this to cause a denial of service (system crash). (CVE-2024-40902)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- MIPS architecture;
- PowerPC
Ubuntu
Linux kernel (Raspberry Pi) vulnerabilities
vendor_ubuntu·2024-09-02·CVSS 5.5
CVE-2023-52629 [MEDIUM] Linux kernel (Raspberry Pi) vulnerabilities
Title: Linux kernel (Raspberry Pi) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
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 could use this to possibly cause a denial of
service (system crash). (CVE-2024-24860)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- SuperH RISC architecture;
- MMC subsystem;
- Network drivers;
- SCSI drivers;
- GFS2 file system;
- IPv4 networking;
- IPv6 networking;
- HD-audio driver;
(CVE-2024-26830, CVE-2024-39484, CVE-2024-36901, CVE-2024-26929,
CVE-2024-26921,
Ubuntu
Linux kernel (Oracle) vulnerabilities
vendor_ubuntu·2024-08-28·CVSS 5.5
CVE-2024-35955 [MEDIUM] Linux kernel (Oracle) vulnerabilities
Title: Linux kernel (Oracle) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Yuxuan Hu discovered that the Bluetooth RFCOMM protocol driver in the Linux
Kernel contained a race condition, leading to a NULL pointer dereference.
An attacker could possibly use this to cause a denial of service (system
crash). (CVE-2024-22099)
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 could use this to possibly cause a denial of
service (system crash). (CVE-2024-24860)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsyst
Ubuntu
Linux kernel (AWS) vulnerabilities
vendor_ubuntu·2024-08-26·CVSS 5.5
CVE-2024-39484 [MEDIUM] Linux kernel (AWS) vulnerabilities
Title: Linux kernel (AWS) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
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 could use this to possibly cause a denial of
service (system crash). (CVE-2024-24860)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- SuperH RISC architecture;
- MMC subsystem;
- Network drivers;
- SCSI drivers;
- GFS2 file system;
- IPv4 networking;
- IPv6 networking;
- HD-audio driver;
(CVE-2024-26830, CVE-2024-39484, CVE-2024-36901, CVE-2024-26929,
CVE-2024-26921, CVE-2021-
Ubuntu
Linux kernel (Azure) vulnerabilities
vendor_ubuntu·2024-08-23·CVSS 5.5
CVE-2024-39484 [MEDIUM] Linux kernel (Azure) vulnerabilities
Title: Linux kernel (Azure) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
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 could use this to possibly cause a denial of
service (system crash). (CVE-2024-24860)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- SuperH RISC architecture;
- MMC subsystem;
- Network drivers;
- SCSI drivers;
- GFS2 file system;
- IPv4 networking;
- IPv6 networking;
- HD-audio driver;
(CVE-2024-26830, CVE-2024-39484, CVE-2024-36901, CVE-2024-26929,
CVE-2024-26921, CVE-202
Ubuntu
Linux kernel (Azure) vulnerabilities
vendor_ubuntu·2024-08-23·CVSS 5.5
CVE-2024-39484 [MEDIUM] Linux kernel (Azure) vulnerabilities
Title: Linux kernel (Azure) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Yuxuan Hu discovered that the Bluetooth RFCOMM protocol driver in the Linux
Kernel contained a race condition, leading to a NULL pointer dereference.
An attacker could possibly use this to cause a denial of service (system
crash). (CVE-2024-22099)
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 could use this to possibly cause a denial of
service (system crash). (CVE-2024-24860)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsyste
Ubuntu
Linux kernel (Oracle) vulnerabilities
vendor_ubuntu·2024-08-23·CVSS 8.4
CVE-2024-39484 [HIGH] Linux kernel (Oracle) vulnerabilities
Title: Linux kernel (Oracle) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- SuperH RISC architecture;
- User-Mode Linux (UML);
- MMC subsystem;
- Network drivers;
- GFS2 file system;
- IPv4 networking;
- IPv6 networking;
(CVE-2024-26921, CVE-2023-52629, CVE-2024-26680, CVE-2024-26830,
CVE-2024-39484, CVE-2024-39292, CVE-2024-36901, CVE-2023-52760)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires y
Ubuntu
Linux kernel (AWS) vulnerabilities
vendor_ubuntu·2024-08-22·CVSS 5.5
CVE-2024-39292 [MEDIUM] Linux kernel (AWS) vulnerabilities
Title: Linux kernel (AWS) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Yuxuan Hu discovered that the Bluetooth RFCOMM protocol driver in the Linux
Kernel contained a race condition, leading to a NULL pointer dereference.
An attacker could possibly use this to cause a denial of service (system
crash). (CVE-2024-22099)
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 could use this to possibly cause a denial of
service (system crash). (CVE-2024-24860)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2024-08-21·CVSS 5.5
CVE-2024-39484 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
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 could use this to possibly cause a denial of
service (system crash). (CVE-2024-24860)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- SuperH RISC architecture;
- MMC subsystem;
- Network drivers;
- SCSI drivers;
- GFS2 file system;
- IPv4 networking;
- IPv6 networking;
- HD-audio driver;
(CVE-2024-26830, CVE-2024-39484, CVE-2024-36901, CVE-2024-26929,
CVE-2024-26921, CVE-2021-46926,
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2024-08-21·CVSS 5.5
CVE-2024-35955 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Yuxuan Hu discovered that the Bluetooth RFCOMM protocol driver in the Linux
Kernel contained a race condition, leading to a NULL pointer dereference.
An attacker could possibly use this to cause a denial of service (system
crash). (CVE-2024-22099)
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 could use this to possibly cause a denial of
service (system crash). (CVE-2024-24860)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Su
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2024-08-21·CVSS 8.4
CVE-2024-39292 [HIGH] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- SuperH RISC architecture;
- User-Mode Linux (UML);
- MMC subsystem;
- Network drivers;
- GFS2 file system;
- IPv4 networking;
- IPv6 networking;
(CVE-2024-26921, CVE-2023-52629, CVE-2024-26680, CVE-2024-26830,
CVE-2024-39484, CVE-2024-39292, CVE-2024-36901, CVE-2023-52760)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to rec
Red Hat
kernel: sh: push-switch: Reorder cleanup operations to avoid use-after-free bug
vendor_redhat·2024-03-29·CVSS 8.4
CVE-2023-52629 [HIGH] CWE-416 kernel: sh: push-switch: Reorder cleanup operations to avoid use-after-free bug
kernel: sh: push-switch: Reorder cleanup operations to avoid use-after-free bug
In the Linux kernel, the following vulnerability has been resolved:
sh: push-switch: Reorder cleanup operations to avoid use-after-free bug
The original code puts flush_work() before timer_shutdown_sync()
in switch_drv_remove(). Although we use flush_work() to stop
the worker, it could be rescheduled in switch_timer(). As a result,
a use-after-free bug can occur. The details are shown below:
(cpu 0) | (cpu 1)
switch_drv_remove() |
flush_work() |
... | switch_timer // timer
| schedule_work(&psw->work)
timer_shutdown_sync() |
... | switch_work_handler // worker
kfree(psw) // free |
| psw->state = 0 // use
This patch puts timer_shutdown_sync() before flush_work() to
mitigate the bugs. As a result, the worker and
Microsoft
sh: push-switch: Reorder cleanup operations to avoid use-after-free bug
vendor_msrc·2024-03-12·CVSS 8.4
CVE-2023-52629 [HIGH] CWE-416 sh: push-switch: Reorder cleanup operations to avoid use-after-free bug
sh: push-switch: Reorder cleanup operations to avoid use-after-free bug
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
Debian
CVE-2023-52629: linux - In the Linux kernel, the following vulnerability has been resolved: sh: push-sw...
vendor_debian·2023·CVSS 8.4
CVE-2023-52629 [HIGH] CVE-2023-52629: linux - In the Linux kernel, the following vulnerability has been resolved: sh: push-sw...
In the Linux kernel, the following vulnerability has been resolved: sh: push-switch: Reorder cleanup operations to avoid use-after-free bug The original code puts flush_work() before timer_shutdown_sync() in switch_drv_remove(). Although we use flush_work() to stop the worker, it could be rescheduled in switch_timer(). As a result, a use-after-free bug can occur. The details are shown below: (cpu 0) | (cpu 1) switch_drv_remove() | flush_work() | ... | switch_timer // timer | schedule_work(&psw->work) timer_shutdown_sync() | ... | switch_work_handler // worker kfree(psw) // free | | psw->state = 0 // use This patch puts timer_shutdown_sync() before flush_work() to mitigate the bugs. As a result, the worker and timer will be stopped safely before the deallocate operations.
Scope: local
bookw
No detection rules found.
No public exploits indexed.
2024-03-29
Published