CVE-2024-43869
published 2024-08-21CVE-2024-43869: In the Linux kernel, the following vulnerability has been resolved: perf: Fix event leak upon exec and file release The perf pending task work is never waited…
PriorityP418medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.21%
11.3th percentile
In the Linux kernel, the following vulnerability has been resolved:
perf: Fix event leak upon exec and file release
The perf pending task work is never waited upon the matching event
release. In the case of a child event, released via free_event()
directly, this can potentially result in a leaked event, such as in the
following scenario that doesn't even require a weak IRQ work
implementation to trigger:
schedule()
prepare_task_switch()
=======>
perf_event_overflow()
event->pending_sigtrap = ...
irq_work_queue(&event->pending_irq)
perf_event_task_sched_out()
event_sched_out()
event->pending_sigtrap = 0;
atomic_long_inc_not_zero(&event->refcount)
task_work_add(&event->pending_task)
finish_lock_switch()
=======>
perf_pending_irq()
//do nothing, rely on pending task work
begin_new_exec()
perf_event_exit_task()
perf_event_exit_event()
// If is child event
free_event()
WARN(atomic_long_cmpxchg(&event->refcount, 1, 0) != 1)
// event is leaked
Similar scenarios can also happen with perf_event_remove_on_exec() or
simply against concurrent perf_event_release().
Fix this with synchonizing against the possibly remaining pending task
work while freeing the event, just like is done with remaining pending
IRQ work. This means that the pending task callback neither need nor
should hold a reference to the event, preventing it from ever beeing
freed.
Affected
22 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.1.106-1 (bookworm) | linux 6.1.106-1 (bookworm) |
| debian | linux-6.1 | < linux 6.1.106-1 (bookworm) | linux 6.1.106-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | — | — |
| linux | linux | >= 5.15.84 < 5.15.165 | 5.15.165 |
| linux | linux | >= 517e6a301f34613bff24a8e35b5455884f2d83d8 < ed2c202dac55423a52d7e2290f2888bf08b8ee99 | ed2c202dac55423a52d7e2290f2888bf08b8ee99 |
| linux | linux | >= 517e6a301f34613bff24a8e35b5455884f2d83d8 < 104e258a004037bc7dba9f6085c71dad6af57ad4 | 104e258a004037bc7dba9f6085c71dad6af57ad4 |
| linux | linux | >= 517e6a301f34613bff24a8e35b5455884f2d83d8 < f34d8307a73a18de5320fcc6f40403146d061891 | f34d8307a73a18de5320fcc6f40403146d061891 |
| linux | linux | >= 517e6a301f34613bff24a8e35b5455884f2d83d8 < 3a5465418f5fd970e86a86c7f4075be262682840 | 3a5465418f5fd970e86a86c7f4075be262682840 |
| linux | linux | >= 6.0.14 < 6.1 | 6.1 |
| linux | linux | >= 8bffa95ac19ff27c8261904f89d36c7fcf215d59 < 9ad46f1fef421d43cdab3a7d1744b2f43b54dae0 | 9ad46f1fef421d43cdab3a7d1744b2f43b54dae0 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 6.1.106-1 | 6.1.106-1 |
| linux | linux_kernel | >= 0 < 6.10.3-1 | 6.10.3-1 |
| linux | linux_kernel | >= 0 < 6.10.3-1 | 6.10.3-1 |
| linux | linux_kernel | >= 0 < 5.15.0-125.135 | 5.15.0-125.135 |
| linux | linux_kernel | >= 0 < 6.8.0-50.51 | 6.8.0-50.51 |
| linux | linux_kernel | >= 5.15.84 < 5.15.165 | 5.15.165 |
| linux | linux_kernel | >= 6.0.14 < 6.1 | 6.1 |
| linux | linux_kernel | >= 6.1.1 < 6.1.103 | 6.1.103 |
| linux | linux_kernel | >= 6.2 < 6.6.44 | 6.6.44 |
| linux | linux_kernel | >= 6.7 < 6.10.3 | 6.10.3 |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv8.8HIGH
vendor_ubuntu8.8HIGH
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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- x86 architecture;
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An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
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arbitrary code. (CVE-2024-25744)
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An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- RISC-V architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
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arbitrary code. (CVE-2024-25744)
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OSV
CVE-2024-43869: In the Linux kernel, the following vulnerability has been resolved: perf: Fix event leak upon exec and file release The perf pending task work is neve
osv·2024-08-21·CVSS 5.5
CVE-2024-43869 [MEDIUM] CVE-2024-43869: In the Linux kernel, the following vulnerability has been resolved: perf: Fix event leak upon exec and file release The perf pending task work is neve
In the Linux kernel, the following vulnerability has been resolved: perf: Fix event leak upon exec and file release The perf pending task work is never waited upon the matching event release. In the case of a child event, released via free_event() directly, this can potentially result in a leaked event, such as in the following scenario that doesn't even require a weak IRQ work implementation to trigger: schedule() prepare_task_switch() =======> perf_event_overflow() event->pending_sigtrap = ... irq_work_queue(&event->pending_irq) perf_event_task_sched_out() event_sched_out() event->pending_sigtrap = 0; atomic_long_inc_not_zero(&event->refcount) task_work_add(&event->pending_task) finish_lock_switch() =======> perf_pending_irq() //do nothing, rely on pending task work begin_new_exec() perf
GHSA
GHSA-9vrp-98c8-qqx8: In the Linux kernel, the following vulnerability has been resolved:
perf: Fix event leak upon exec and file release
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ghsa_unreviewed·2024-08-21
CVE-2024-43869 [MEDIUM] CWE-401 GHSA-9vrp-98c8-qqx8: In the Linux kernel, the following vulnerability has been resolved:
perf: Fix event leak upon exec and file release
The perf pending task work is ne
In the Linux kernel, the following vulnerability has been resolved:
perf: Fix event leak upon exec and file release
The perf pending task work is never waited upon the matching event
release. In the case of a child event, released via free_event()
directly, this can potentially result in a leaked event, such as in the
following scenario that doesn't even require a weak IRQ work
implementation to trigger:
schedule()
prepare_task_switch()
=======>
perf_event_overflow()
event->pending_sigtrap = ...
irq_work_queue(&event->pending_irq)
perf_event_task_sched_out()
event_sched_out()
event->pending_sigtrap = 0;
atomic_long_inc_not_zero(&event->refcount)
task_work_add(&event->pending_task)
finish_lock_switch()
=======>
perf_pending_irq()
//do nothing, rely on pending task work
begin_new_exec(
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CVE-2024-50006 [HIGH] Linux kernel (Azure) vulnerabilities
Title: Linux kernel (Azure) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Andy Nguyen discovered that the Bluetooth L2CAP implementation in the Linux
kernel contained a type-confusion error. A physically proximate remote
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2020-12351)
Andy Nguyen discovered that the Bluetooth A2MP implementation in the Linux
kernel did not properly initialize memory in some situations. A physically
proximate remote attacker could use this to expose sensitive information
(kernel memory). (CVE-2020-12352)
Andy Nguyen discovered that the Bluetooth HCI event packet parser in the
Linux kernel did not properly handle event advertisements of certain sizes,
leading to a
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Title: Linux kernel (Azure) 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:
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- RISC-V architecture;
- S390 architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Android drivers;
- ATM drivers;
- Drivers core;
- Ublk userspace block driver;
- Bluetooth drivers;
- Character device driver;
- Hardware crypto device drivers;
- Buffer Sharing and Synchronization framework;
- DMA engine subsystem;
- Qualcomm firmware drivers;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- Hardware mon
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Title: Linux kernel (HWE) 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:
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- RISC-V architecture;
- S390 architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Android drivers;
- ATM drivers;
- Drivers core;
- Ublk userspace block driver;
- Bluetooth drivers;
- Character device driver;
- Hardware crypto device drivers;
- Buffer Sharing and Synchronization framework;
- DMA engine subsystem;
- Qualcomm firmware drivers;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- Hardware monit
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did not properly check for the device to be enabled before writing. A local
attacker could possibly use this to cause a denial of service.
(CVE-2024-25741)
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:
- ARM32 architecture;
- ARM64 architecture;
- MIPS architecture;
- PA-RISC architecture;
- PowerPC architecture;
- RISC-V architecture;
- S390 architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Android drivers;
- Serial ATA
Ubuntu
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CVE-2024-43846 Linux kernel (NVIDIA) vulnerabilities
Title: Linux kernel (NVIDIA) 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:
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- RISC-V architecture;
- S390 architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Android drivers;
- ATM drivers;
- Drivers core;
- Ublk userspace block driver;
- Bluetooth drivers;
- Character device driver;
- Hardware crypto device drivers;
- Buffer Sharing and Synchronization framework;
- DMA engine subsystem;
- Qualcomm firmware drivers;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- Hardware mo
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2024-12-12
CVE-2024-43895 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:
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- RISC-V architecture;
- S390 architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Android drivers;
- ATM drivers;
- Drivers core;
- Ublk userspace block driver;
- Bluetooth drivers;
- Character device driver;
- Hardware crypto device drivers;
- Buffer Sharing and Synchronization framework;
- DMA engine subsystem;
- Qualcomm firmware drivers;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- Hardware monitoring
Ubuntu
Linux kernel (Intel IoTG) vulnerabilities
vendor_ubuntu·2024-12-09·CVSS 8.8
CVE-2024-43846 [HIGH] Linux kernel (Intel IoTG) vulnerabilities
Title: Linux kernel (Intel IoTG) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Supraja Sridhara, Benedict Schlüter, Mark Kuhne, Andrin Bertschi, and
Shweta Shinde discovered that the Confidential Computing framework in the
Linux kernel for x86 platforms did not properly handle 32-bit emulation on
TDX and SEV. An attacker with access to the VMM could use this to cause a
denial of service (guest crash) or possibly execute arbitrary code.
(CVE-2024-25744)
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:
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- RISC-V architecture;
- User-Mode Linux (UML);
- x86 arch
Ubuntu
Linux kernel (Azure) vulnerabilities
vendor_ubuntu·2024-11-20·CVSS 7.1
CVE-2024-46752 [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 CIFS network file system implementation in the
Linux kernel did not properly validate certain SMB messages, leading to an
out-of-bounds read vulnerability. An attacker could use this to cause a
denial of service (system crash) or possibly expose sensitive information.
(CVE-2023-6610)
Supraja Sridhara, Benedict Schlüter, Mark Kuhne, Andrin Bertschi, and
Shweta Shinde discovered that the Confidential Computing framework in the
Linux kernel for x86 platforms did not properly handle 32-bit emulation on
TDX and SEV. An attacker with access to the VMM could use this to cause a
denial of service (guest crash) or possibly execute arbitrary code.
(CVE-2024-25744
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2024-11-12·CVSS 8.8
CVE-2024-46815 [HIGH] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Supraja Sridhara, Benedict Schlüter, Mark Kuhne, Andrin Bertschi, and
Shweta Shinde discovered that the Confidential Computing framework in
the Linux kernel for x86 platforms did not properly handle 32-bit
emulation on TDX and SEV. An attacker with access to the VMM could use
this to cause a denial of service (guest crash) or possibly execute
arbitrary code. (CVE-2024-25744)
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:
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- RISC-V architecture;
- User-Mode Linux (UML);
- x86 architecture;
- B
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2024-11-11·CVSS 8.8
CVE-2024-43908 [HIGH] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Supraja Sridhara, Benedict Schlüter, Mark Kuhne, Andrin Bertschi, and
Shweta Shinde discovered that the Confidential Computing framework in
the Linux kernel for x86 platforms did not properly handle 32-bit
emulation on TDX and SEV. An attacker with access to the VMM could use
this to cause a denial of service (guest crash) or possibly execute
arbitrary code. (CVE-2024-25744)
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:
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- RISC-V architecture;
- User-Mode Linux (UML);
- x86 architecture;
- B
Red Hat
kernel: perf: Fix event leak upon exec and file release
vendor_redhat·2024-08-21·CVSS 5.5
CVE-2024-43869 [MEDIUM] CWE-402 kernel: perf: Fix event leak upon exec and file release
kernel: perf: Fix event leak upon exec and file release
In the Linux kernel, the following vulnerability has been resolved:
perf: Fix event leak upon exec and file release
The perf pending task work is never waited upon the matching event
release. In the case of a child event, released via free_event()
directly, this can potentially result in a leaked event, such as in the
following scenario that doesn't even require a weak IRQ work
implementation to trigger:
schedule()
prepare_task_switch()
=======>
perf_event_overflow()
event->pending_sigtrap = ...
irq_work_queue(&event->pending_irq)
perf_event_task_sched_out()
event_sched_out()
event->pending_sigtrap = 0;
atomic_long_inc_not_zero(&event->refcount)
task_work_add(&event->pending_task)
finish_lock_switch()
=======>
perf_pending_irq()
//d
Debian
CVE-2024-43869: linux - In the Linux kernel, the following vulnerability has been resolved: perf: Fix e...
vendor_debian·2024·CVSS 5.5
CVE-2024-43869 [MEDIUM] CVE-2024-43869: linux - In the Linux kernel, the following vulnerability has been resolved: perf: Fix e...
In the Linux kernel, the following vulnerability has been resolved: perf: Fix event leak upon exec and file release The perf pending task work is never waited upon the matching event release. In the case of a child event, released via free_event() directly, this can potentially result in a leaked event, such as in the following scenario that doesn't even require a weak IRQ work implementation to trigger: schedule() prepare_task_switch() =======> perf_event_overflow() event->pending_sigtrap = ... irq_work_queue(&event->pending_irq) perf_event_task_sched_out() event_sched_out() event->pending_sigtrap = 0; atomic_long_inc_not_zero(&event->refcount) task_work_add(&event->pending_task) finish_lock_switch() =======> perf_pending_irq() //do nothing, rely on pending task work begin_new_exec() perf
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://git.kernel.org/stable/c/104e258a004037bc7dba9f6085c71dad6af57ad4https://git.kernel.org/stable/c/3a5465418f5fd970e86a86c7f4075be262682840https://git.kernel.org/stable/c/9ad46f1fef421d43cdab3a7d1744b2f43b54dae0https://git.kernel.org/stable/c/ed2c202dac55423a52d7e2290f2888bf08b8ee99https://git.kernel.org/stable/c/f34d8307a73a18de5320fcc6f40403146d061891https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
2024-08-21
Published