CVE-2024-26690
published 2024-04-03CVE-2024-26690: In the Linux kernel, the following vulnerability has been resolved: net: stmmac: protect updates of 64-bit statistics counters As explained by a comment in…
PriorityP433medium6.5CVSS 3.1
AVNACLPRLUINSUCNIHAN
EPSS
0.71%
50.0th percentile
In the Linux kernel, the following vulnerability has been resolved:
net: stmmac: protect updates of 64-bit statistics counters
As explained by a comment in , write side of struct
u64_stats_sync must ensure mutual exclusion, or one seqcount update could
be lost on 32-bit platforms, thus blocking readers forever. Such lockups
have been observed in real world after stmmac_xmit() on one CPU raced with
stmmac_napi_poll_tx() on another CPU.
To fix the issue without introducing a new lock, split the statics into
three parts:
1. fields updated only under the tx queue lock,
2. fields updated only during NAPI poll,
3. fields updated only from interrupt context,
Updates to fields in the first two groups are already serialized through
other locks. It is sufficient to split the existing struct u64_stats_sync
so that each group has its own.
Note that tx_set_ic_bit is updated from both contexts. Split this counter
so that each context gets its own, and calculate their sum to get the total
value in stmmac_get_ethtool_stats().
For the third group, multiple interrupts may be processed by different CPUs
at the same time, but interrupts on the same CPU will not nest. Move fields
from this group to a newly created per-cpu struct stmmac_pcpu_stats.
Affected
12 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.7.7-1 (forky) | linux 6.7.7-1 (forky) |
| linux | linux | — | — |
| linux | linux | — | — |
| linux | linux | >= 133466c3bbe171f826294161db203f7670bb30c8 < 9680b2ab54ba8d72581100e8c45471306101836e | 9680b2ab54ba8d72581100e8c45471306101836e |
| linux | linux | >= 133466c3bbe171f826294161db203f7670bb30c8 < e6af0f082a4b87b99ad033003be2a904a1791b3f | e6af0f082a4b87b99ad033003be2a904a1791b3f |
| linux | linux | >= 133466c3bbe171f826294161db203f7670bb30c8 < 38cc3c6dcc09dc3a1800b5ec22aef643ca11eab8 | 38cc3c6dcc09dc3a1800b5ec22aef643ca11eab8 |
| linux | linux | >= 6.1.160 < 6.2 | 6.2 |
| linux | linux_kernel | — | — |
| 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 | >= 6.6 < 6.6.18 | 6.6.18 |
| linux | linux_kernel | >= 6.7 < 6.7.6 | 6.7.6 |
CVSS provenance
nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
osv6.5MEDIUM
vendor_debian6.5LOW
vendor_redhat6.5MEDIUM
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GHSA
GHSA-5c46-ggmc-6j5m: In the Linux kernel, the following vulnerability has been resolved:
net: stmmac: protect updates of 64-bit statistics counters
As explained by a com
ghsa_unreviewed·2024-04-03
CVE-2024-26690 [MEDIUM] GHSA-5c46-ggmc-6j5m: In the Linux kernel, the following vulnerability has been resolved:
net: stmmac: protect updates of 64-bit statistics counters
As explained by a com
In the Linux kernel, the following vulnerability has been resolved:
net: stmmac: protect updates of 64-bit statistics counters
As explained by a comment in , write side of struct
u64_stats_sync must ensure mutual exclusion, or one seqcount update could
be lost on 32-bit platforms, thus blocking readers forever. Such lockups
have been observed in real world after stmmac_xmit() on one CPU raced with
stmmac_napi_poll_tx() on another CPU.
To fix the issue without introducing a new lock, split the statics into
three parts:
1. fields updated only under the tx queue lock,
2. fields updated only during NAPI poll,
3. fields updated only from interrupt context,
Updates to fields in the first two groups are already serialized through
other locks. It is sufficient to split the existing struct u64
OSV
CVE-2024-26690: In the Linux kernel, the following vulnerability has been resolved: net: stmmac: protect updates of 64-bit statistics counters As explained by a comme
osv·2024-04-03·CVSS 6.5
CVE-2024-26690 [MEDIUM] CVE-2024-26690: In the Linux kernel, the following vulnerability has been resolved: net: stmmac: protect updates of 64-bit statistics counters As explained by a comme
In the Linux kernel, the following vulnerability has been resolved: net: stmmac: protect updates of 64-bit statistics counters As explained by a comment in , write side of struct u64_stats_sync must ensure mutual exclusion, or one seqcount update could be lost on 32-bit platforms, thus blocking readers forever. Such lockups have been observed in real world after stmmac_xmit() on one CPU raced with stmmac_napi_poll_tx() on another CPU. To fix the issue without introducing a new lock, split the statics into three parts: 1. fields updated only under the tx queue lock, 2. fields updated only during NAPI poll, 3. fields updated only from interrupt context, Updates to fields in the first two groups are already serialized through other locks. It is sufficient to split the existing struct u64_stat
Red Hat
kernel: net: stmmac: protect updates of 64-bit statistics counters
vendor_redhat·2024-04-03·CVSS 6.5
CVE-2024-26690 [MEDIUM] CWE-99 kernel: net: stmmac: protect updates of 64-bit statistics counters
kernel: net: stmmac: protect updates of 64-bit statistics counters
In the Linux kernel, the following vulnerability has been resolved:
net: stmmac: protect updates of 64-bit statistics counters
As explained by a comment in , write side of struct
u64_stats_sync must ensure mutual exclusion, or one seqcount update could
be lost on 32-bit platforms, thus blocking readers forever. Such lockups
have been observed in real world after stmmac_xmit() on one CPU raced with
stmmac_napi_poll_tx() on another CPU.
To fix the issue without introducing a new lock, split the statics into
three parts:
1. fields updated only under the tx queue lock,
2. fields updated only during NAPI poll,
3. fields updated only from interrupt context,
Updates to fields in the first two groups are already serialized through
Debian
CVE-2024-26690: linux - In the Linux kernel, the following vulnerability has been resolved: net: stmmac...
vendor_debian·2024·CVSS 6.5
CVE-2024-26690 [MEDIUM] CVE-2024-26690: linux - In the Linux kernel, the following vulnerability has been resolved: net: stmmac...
In the Linux kernel, the following vulnerability has been resolved: net: stmmac: protect updates of 64-bit statistics counters As explained by a comment in , write side of struct u64_stats_sync must ensure mutual exclusion, or one seqcount update could be lost on 32-bit platforms, thus blocking readers forever. Such lockups have been observed in real world after stmmac_xmit() on one CPU raced with stmmac_napi_poll_tx() on another CPU. To fix the issue without introducing a new lock, split the statics into three parts: 1. fields updated only under the tx queue lock, 2. fields updated only during NAPI poll, 3. fields updated only from interrupt context, Updates to fields in the first two groups are already serialized through other locks. It is sufficient to split the existing struct u64_stat
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://git.kernel.org/stable/c/38cc3c6dcc09dc3a1800b5ec22aef643ca11eab8https://git.kernel.org/stable/c/9680b2ab54ba8d72581100e8c45471306101836ehttps://git.kernel.org/stable/c/e6af0f082a4b87b99ad033003be2a904a1791b3fhttps://git.kernel.org/stable/c/38cc3c6dcc09dc3a1800b5ec22aef643ca11eab8https://git.kernel.org/stable/c/9680b2ab54ba8d72581100e8c45471306101836ehttps://git.kernel.org/stable/c/e6af0f082a4b87b99ad033003be2a904a1791b3f
2024-04-03
Published