Answer in brief
CVE-2024-26690 records a High severity (CVSS 7.5) vulnerability in net: stmmac: protect updates of 64-bit statistics counters. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.8:rc1:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.8:rc2:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.8:rc3:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=133466c3bbe171f826294161db203f7670bb30c8 <9680b2ab54ba8d72581100e8c45471306101836e || >=133466c3bbe171f826294161db203f7670bb30c8 <e6af0f082a4b87b99ad033003be2a904a1791b3f || >=133466c3bbe171f826294161db203f7670bb30c8 <38cc3c6dcc09dc3a1800b5ec22aef643ca11eab8 || ff12183568e0531f6db935378a92237766ad080a || >=6.1.160 <6.2 | 9680b2ab54ba8d72581100e8c45471306101836e, e6af0f082a4b87b99ad033003be2a904a1791b3f, 38cc3c6dcc09dc3a1800b5ec22aef643ca11eab8, 6.2 |
| Linux/Linuxgeneric | 6.6 | Not reported |
| Linux/Linuxgeneric | >=ff12183568e0531f6db935378a92237766ad080a <52002cae02db6ab4c50efe4095d68db3a6892b11 || >=133466c3bbe171f826294161db203f7670bb30c8 <9680b2ab54ba8d72581100e8c45471306101836e || >=133466c3bbe171f826294161db203f7670bb30c8 <e6af0f082a4b87b99ad033003be2a904a1791b3f || >=133466c3bbe171f826294161db203f7670bb30c8 <38cc3c6dcc09dc3a1800b5ec22aef643ca11eab8 || >=6.1.160 <6.1.191 | 52002cae02db6ab4c50efe4095d68db3a6892b11, 9680b2ab54ba8d72581100e8c45471306101836e, e6af0f082a4b87b99ad033003be2a904a1791b3f, 38cc3c6dcc09dc3a1800b5ec22aef643ca11eab8, 6.1.191 |
Published upstream
Apr 3, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 30, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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 <linux/u64_stats_sync.h>, 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.
Quoted source text, attributed separately from HOL analysis.