CVE-2022-49640
published 2025-02-26CVE-2022-49640: In the Linux kernel, the following vulnerability has been resolved: sysctl: Fix data races in proc_douintvec_minmax(). A sysctl variable is accessed…
PriorityP415medium4.7CVSS 3.1
AVLACHPRLUINSUCNINAH
EPSS
0.17%
7.1th percentile
In the Linux kernel, the following vulnerability has been resolved:
sysctl: Fix data races in proc_douintvec_minmax().
A sysctl variable is accessed concurrently, and there is always a chance
of data-race. So, all readers and writers need some basic protection to
avoid load/store-tearing.
This patch changes proc_douintvec_minmax() to use READ_ONCE() and
WRITE_ONCE() internally to fix data-races on the sysctl side. For now,
proc_douintvec_minmax() itself is tolerant to a data-race, but we still
need to add annotations on the other subsystem's side.
Affected
14 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 5.18.14-1 (bookworm) | linux 5.18.14-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= 61d9b56a89208d8cccd0b4cfec7e6959717e16e3 < e3a2144b3b6bf9ecafd91087c8b8b48171ec19df | e3a2144b3b6bf9ecafd91087c8b8b48171ec19df |
| linux | linux | >= 61d9b56a89208d8cccd0b4cfec7e6959717e16e3 < 40e0477a7371d101c55b69d9c32a7a1ed82ab5ea | 40e0477a7371d101c55b69d9c32a7a1ed82ab5ea |
| linux | linux | >= 61d9b56a89208d8cccd0b4cfec7e6959717e16e3 < b60eddf98b9716651069dfda296c91311a7a6293 | b60eddf98b9716651069dfda296c91311a7a6293 |
| linux | linux | >= 61d9b56a89208d8cccd0b4cfec7e6959717e16e3 < 2d3b559df3ed39258737789aae2ae7973d205bc1 | 2d3b559df3ed39258737789aae2ae7973d205bc1 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 5.10.136-1 | 5.10.136-1 |
| linux | linux_kernel | >= 0 < 5.18.14-1 | 5.18.14-1 |
| linux | linux_kernel | >= 0 < 5.18.14-1 | 5.18.14-1 |
| linux | linux_kernel | >= 0 < 5.18.14-1 | 5.18.14-1 |
| linux | linux_kernel | >= 4.13 < 5.10.132 | 5.10.132 |
| linux | linux_kernel | >= 5.11 < 5.15.56 | 5.15.56 |
| linux | linux_kernel | >= 5.16 < 5.18.13 | 5.18.13 |
CVSS provenance
nvdv3.14.7MEDIUMCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
osv4.7MEDIUM
vendor_debian4.7MEDIUM
vendor_redhat4.7MEDIUM
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Red Hat
kernel: sysctl: Fix data races in proc_douintvec_minmax().
vendor_redhat·2025-02-26·CVSS 4.7
CVE-2022-49640 [MEDIUM] kernel: sysctl: Fix data races in proc_douintvec_minmax().
kernel: sysctl: Fix data races in proc_douintvec_minmax().
In the Linux kernel, the following vulnerability has been resolved:
sysctl: Fix data races in proc_douintvec_minmax().
A sysctl variable is accessed concurrently, and there is always a chance
of data-race. So, all readers and writers need some basic protection to
avoid load/store-tearing.
This patch changes proc_douintvec_minmax() to use READ_ONCE() and
WRITE_ONCE() internally to fix data-races on the sysctl side. For now,
proc_douintvec_minmax() itself is tolerant to a data-race, but we still
need to add annotations on the other subsystem's side.
Statement: The bug can lead to incorrect numerical value being read with sysctl for some specific cases if race condition happened (when both modifying this value and reading). The secu
Debian
CVE-2022-49640: linux - In the Linux kernel, the following vulnerability has been resolved: sysctl: Fix...
vendor_debian·2022·CVSS 4.7
CVE-2022-49640 [MEDIUM] CVE-2022-49640: linux - In the Linux kernel, the following vulnerability has been resolved: sysctl: Fix...
In the Linux kernel, the following vulnerability has been resolved: sysctl: Fix data races in proc_douintvec_minmax(). A sysctl variable is accessed concurrently, and there is always a chance of data-race. So, all readers and writers need some basic protection to avoid load/store-tearing. This patch changes proc_douintvec_minmax() to use READ_ONCE() and WRITE_ONCE() internally to fix data-races on the sysctl side. For now, proc_douintvec_minmax() itself is tolerant to a data-race, but we still need to add annotations on the other subsystem's side.
Scope: local
bookworm: resolved (fixed in 5.18.14-1)
bullseye: resolved (fixed in 5.10.136-1)
forky: resolved (fixed in 5.18.14-1)
sid: resolved (fixed in 5.18.14-1)
trixie: resolved (fixed in 5.18.14-1)
GHSA
GHSA-6w2x-xmw9-v3hc: In the Linux kernel, the following vulnerability has been resolved:
sysctl: Fix data races in proc_douintvec_minmax()
ghsa_unreviewed·2025-03-12
CVE-2022-49640 [MEDIUM] CWE-362 GHSA-6w2x-xmw9-v3hc: In the Linux kernel, the following vulnerability has been resolved:
sysctl: Fix data races in proc_douintvec_minmax()
In the Linux kernel, the following vulnerability has been resolved:
sysctl: Fix data races in proc_douintvec_minmax().
A sysctl variable is accessed concurrently, and there is always a chance
of data-race. So, all readers and writers need some basic protection to
avoid load/store-tearing.
This patch changes proc_douintvec_minmax() to use READ_ONCE() and
WRITE_ONCE() internally to fix data-races on the sysctl side. For now,
proc_douintvec_minmax() itself is tolerant to a data-race, but we still
need to add annotations on the other subsystem's side.
OSV
CVE-2022-49640: In the Linux kernel, the following vulnerability has been resolved: sysctl: Fix data races in proc_douintvec_minmax()
osv·2025-02-26·CVSS 4.7
CVE-2022-49640 [MEDIUM] CVE-2022-49640: In the Linux kernel, the following vulnerability has been resolved: sysctl: Fix data races in proc_douintvec_minmax()
In the Linux kernel, the following vulnerability has been resolved: sysctl: Fix data races in proc_douintvec_minmax(). A sysctl variable is accessed concurrently, and there is always a chance of data-race. So, all readers and writers need some basic protection to avoid load/store-tearing. This patch changes proc_douintvec_minmax() to use READ_ONCE() and WRITE_ONCE() internally to fix data-races on the sysctl side. For now, proc_douintvec_minmax() itself is tolerant to a data-race, but we still need to add annotations on the other subsystem's side.
No detection rules found.
No public exploits indexed.
2025-02-26
Published