CVE-2024-26686
published 2024-04-03CVE-2024-26686: In the Linux kernel, the following vulnerability has been resolved: fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats…
PriorityP420medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.21%
11.7th percentile
In the Linux kernel, the following vulnerability has been resolved:
fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats
lock_task_sighand() can trigger a hard lockup. If NR_CPUS threads call
do_task_stat() at the same time and the process has NR_THREADS, it will
spin with irqs disabled O(NR_CPUS * NR_THREADS) time.
Change do_task_stat() to use sig->stats_lock to gather the statistics
outside of ->siglock protected section, in the likely case this code will
run lockless.
Affected
19 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.1.82-1 (bookworm) | linux 6.1.82-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 4fe85bdaabd63f8f8579b24a10ed597c9c482164 | 4fe85bdaabd63f8f8579b24a10ed597c9c482164 |
| linux | linux | >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 0c35d1914353799c54fa1843fe7dea6fcbcdbac5 | 0c35d1914353799c54fa1843fe7dea6fcbcdbac5 |
| linux | linux | >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < cf4b8c39b9a0bd81c47afc7ef62914a62dd5ec4d | cf4b8c39b9a0bd81c47afc7ef62914a62dd5ec4d |
| linux | linux | >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 3820b0fac7732a653bcc6f6ac20c1d72e697f8f6 | 3820b0fac7732a653bcc6f6ac20c1d72e697f8f6 |
| linux | linux | >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 27978243f165b44e342f28f449b91327944ea071 | 27978243f165b44e342f28f449b91327944ea071 |
| linux | linux | >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 7601df8031fd67310af891897ef6cc0df4209305 | 7601df8031fd67310af891897ef6cc0df4209305 |
| linux | linux_kernel | < 6.1.82 | 6.1.82 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 5.10.237-1 | 5.10.237-1 |
| linux | linux_kernel | >= 0 < 6.1.82-1 | 6.1.82-1 |
| linux | linux_kernel | >= 0 < 6.7.7-1 | 6.7.7-1 |
| linux | linux_kernel | >= 0 < 6.7.7-1 | 6.7.7-1 |
| linux | linux_kernel | >= 0 < 5.15.0-144.157 | 5.15.0-144.157 |
| linux | linux_kernel | >= 6.2 < 6.7.6 | 6.7.6 |
| msrc | azl3_kernel_6.6.82.1-1_on_azure_linux_3.0 | — | — |
| msrc | azl3_kernel_6.6.92.2-1_on_azure_linux_3.0 | — | — |
| msrc | cbl2_kernel_5.15.182.1-1_on_cbl_mariner_2.0 | — | — |
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_msrc5.5MEDIUM
vendor_redhat5.5MEDIUM
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- Serial ATA and Parallel ATA drivers;
- Bluetooth drivers;
- Bus devices;
- CPU frequency scaling framework;
- Buffer Sharing and Synchronization framework;
- DMA engine subsystem;
- Arm Firmware Framework for ARMv8-A(FFA);
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- DMA engine subsystem;
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- Bluetooth drivers;
- Bus devices;
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- Buffer Sharing and Synchronization framework;
- DMA engine subsystem;
- ARM SCMI message protocol;
- GPU drivers;
- HID subsystem;
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- Buffer Sharing and Synchronization framework;
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- Cryptographic API;
- Serial ATA and Parallel ATA drivers;
- Bluetooth drivers;
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- CPU frequency scaling framework;
- Buffer Sharing and Synchronization framework;
- DMA engine subsystem;
- ARM SCMI message protocol;
- GPU drivers;
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- PowerPC architecture;
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- Serial ATA and Parallel ATA drivers;
- Bluetooth drivers;
- Bus devices;
- CPU frequency scaling framework;
- Buffer Sharing and Synchronization framework;
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- ARM SCMI message protocol;
- GPU drivers;
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fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats
vendor_msrc·2024-04-09·CVSS 5.5
CVE-2024-26686 [MEDIUM] CWE-667 fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats
fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats
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
Red Hat
kernel: fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats
vendor_redhat·2024-04-03·CVSS 5.5
CVE-2024-26686 [MEDIUM] CWE-413 kernel: fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats
kernel: fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats
In the Linux kernel, the following vulnerability has been resolved:
fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats
lock_task_sighand() can trigger a hard lockup. If NR_CPUS threads call
do_task_stat() at the same time and the process has NR_THREADS, it will
spin with irqs disabled O(NR_CPUS * NR_THREADS) time.
Change do_task_stat() to use sig->stats_lock to gather the statistics
outside of ->siglock protected section, in the likely case this code will
run lockless.
A vulnerability was found in the do_task_stat() function in the Linux kernel, where due to excessive lock contention, a potential hard lockup could be created. This can create a performance bottleneck and le
Debian
CVE-2024-26686: linux - In the Linux kernel, the following vulnerability has been resolved: fs/proc: do...
vendor_debian·2024·CVSS 5.5
CVE-2024-26686 [MEDIUM] CVE-2024-26686: linux - In the Linux kernel, the following vulnerability has been resolved: fs/proc: do...
In the Linux kernel, the following vulnerability has been resolved: fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats lock_task_sighand() can trigger a hard lockup. If NR_CPUS threads call do_task_stat() at the same time and the process has NR_THREADS, it will spin with irqs disabled O(NR_CPUS * NR_THREADS) time. Change do_task_stat() to use sig->stats_lock to gather the statistics outside of ->siglock protected section, in the likely case this code will run lockless.
Scope: local
bookworm: resolved (fixed in 6.1.82-1)
bullseye: resolved (fixed in 5.10.237-1)
forky: resolved (fixed in 6.7.7-1)
sid: resolved (fixed in 6.7.7-1)
trixie: resolved (fixed in 6.7.7-1)
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- Buffer Sharing and Synchronization framework;
- DMA engine subsystem;
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- Cryptographic API;
- Serial ATA and Parallel ATA drivers;
- Bluetooth drivers;
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- DMA engine subsystem;
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- Cryptographic API;
- Serial ATA and Parallel ATA drivers;
- Bluetooth drivers;
- Bus devices;
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- Buffer Sharing and Synchronization framework;
- DMA engine subsystem;
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- Serial ATA and Parallel ATA drivers;
- Bluetooth drivers;
- Bus devices;
- CPU frequency scaling framework;
- Buffer Sharing and Synchronization framework;
- DMA engine subsystem;
- ARM SCMI message protocol;
- GPU drivers;
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- Serial ATA and Parallel ATA drivers;
- Bluetooth drivers;
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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:
- PA-RISC architecture;
- PowerPC architecture;
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Serial ATA and Parallel ATA drivers;
- Bluetooth drivers;
- Bus devices;
- CPU frequency scaling framework;
- Buffer Sharing and Synchronization framework;
- DMA engine subsystem;
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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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- PowerPC architecture;
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Serial ATA and Parallel ATA drivers;
- Bluetooth drivers;
- Bus devices;
- CPU frequency scaling framework;
- Buffer Sharing and Synchronization framework;
- DMA engine subsystem;
- ARM SCMI message protocol;
- GPU drivers;
- HID subsystem;
- HSI subsystem;
- I2C subsystem;
- I3C subsystem;
- IIO subsystem;
- InfiniBand drivers;
- IOMMU subsystem;
- IRQ chip drivers;
- MCB driver;
- Multiple devices driver;
- Media drivers;
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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:
- PA-RISC architecture;
- PowerPC architecture;
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Serial ATA and Parallel ATA drivers;
- Bluetooth drivers;
- Bus devices;
- CPU frequency scaling framework;
- Buffer Sharing and Synchronization framework;
- DMA engine subsystem;
- ARM SCMI message protocol;
- GPU drivers;
- HID subsystem;
- HSI subsystem;
- I2C subsystem;
- I3C subsystem;
- IIO subsystem;
- InfiniBand drivers;
- IOMMU subsystem;
- IRQ chip drivers;
- MCB driver;
- Multiple devices driver;
- Media drivers;
- Multifunction
OSV
linux-intel-iotg-5.15 vulnerabilities
osv·2025-07-18·CVSS 8.8
CVE-2024-8805 [HIGH] linux-intel-iotg-5.15 vulnerabilities
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Michael Randrianantenaina discovered that the Bluetooth driver in the Linux
Kernel contained an improper access control vulnerability. A nearby
attacker could use this to connect a rougue device and possibly execute
arbitrary code. (CVE-2024-8805)
It was discovered that the CIFS network file system implementation in the
Linux kernel did not properly verify the target namespace when handling
upcalls. An attacker could use this to expose sensitive information.
(CVE-2025-2312)
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:
- PA-RISC architecture;
- PowerPC architecture;
- x86 architecture;
- Block layer subsystem;
- Crypt
GHSA
GHSA-mgx5-jrhq-g7rg: In the Linux kernel, the following vulnerability has been resolved:
fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats
ghsa_unreviewed·2024-04-03
CVE-2024-26686 [MEDIUM] CWE-667 GHSA-mgx5-jrhq-g7rg: In the Linux kernel, the following vulnerability has been resolved:
fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats
In the Linux kernel, the following vulnerability has been resolved:
fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats
lock_task_sighand() can trigger a hard lockup. If NR_CPUS threads call
do_task_stat() at the same time and the process has NR_THREADS, it will
spin with irqs disabled O(NR_CPUS * NR_THREADS) time.
Change do_task_stat() to use sig->stats_lock to gather the statistics
outside of ->siglock protected section, in the likely case this code will
run lockless.
OSV
CVE-2024-26686: In the Linux kernel, the following vulnerability has been resolved: fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats lo
osv·2024-04-03·CVSS 5.5
CVE-2024-26686 [MEDIUM] CVE-2024-26686: In the Linux kernel, the following vulnerability has been resolved: fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats lo
In the Linux kernel, the following vulnerability has been resolved: fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats lock_task_sighand() can trigger a hard lockup. If NR_CPUS threads call do_task_stat() at the same time and the process has NR_THREADS, it will spin with irqs disabled O(NR_CPUS * NR_THREADS) time. Change do_task_stat() to use sig->stats_lock to gather the statistics outside of ->siglock protected section, in the likely case this code will run lockless.
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/0c35d1914353799c54fa1843fe7dea6fcbcdbac5https://git.kernel.org/stable/c/27978243f165b44e342f28f449b91327944ea071https://git.kernel.org/stable/c/3820b0fac7732a653bcc6f6ac20c1d72e697f8f6https://git.kernel.org/stable/c/4fe85bdaabd63f8f8579b24a10ed597c9c482164https://git.kernel.org/stable/c/7601df8031fd67310af891897ef6cc0df4209305https://git.kernel.org/stable/c/cf4b8c39b9a0bd81c47afc7ef62914a62dd5ec4dhttps://git.kernel.org/stable/c/27978243f165b44e342f28f449b91327944ea071https://git.kernel.org/stable/c/7601df8031fd67310af891897ef6cc0df4209305https://git.kernel.org/stable/c/cf4b8c39b9a0bd81c47afc7ef62914a62dd5ec4dhttps://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
2024-04-03
Published