Linux · Kernel
CVE-2025-39964
crypto: af_alg - Disallow concurrent writes in af_alg_sendmsg
Nedir
In the Linux kernel, the following vulnerability has been resolved:
crypto: af_alg - Disallow concurrent writes in af_alg_sendmsg
Issuing two writes to the same af_alg socket is bogus as the
data will be interleaved in an unpredictable fashion. Furthermore,
concurrent writes may create inconsistencies in the internal
socket state.
Disallow this by adding a new ctx->write field that indiciates
exclusive ownership for writing.
CISA: Linux Kernel contains a race condition vulnerability which allows concurrent writes to the same AF_ALG socket causing data to be unpredictably interleaved and creating inconsistencies in the socket's internal state.
Ne yapmalı
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
ABD federal kurumları için son tarih: 21 Eylül 2026
- CISA listesine eklenme
- 18 Eylül 2026
- Yayımlanma
- 13 Ekim 2025
- Önem
- Yüksek 7,8 CVSS 3.1
- Önümüzdeki 30 günde saldırı olasılığı (EPSS)
- 1,6% bilinen tüm açıkların en üstteki 24,8% diliminde
- Zayıflık
- CWE-362
- Daha fazla ayrıntı
- NVD · CVE.org · CISA
Tüm kaynaklar (7)
- https://git.kernel.org/stable/c/0f28c4adbc4a97437874c9b669fd7958a8c6d6ce
- https://git.kernel.org/stable/c/e4c1ec11132ec466f7362a95f36a506ce4dc08c9
- https://git.kernel.org/stable/c/1f323a48e9b5ebfe6dc7d130fdf5c3c0e92a07c8
- https://git.kernel.org/stable/c/7c4491b5644e3a3708f3dbd7591be0a570135b84
- https://git.kernel.org/stable/c/9aee87da5572b3a14075f501752e209801160d3d
- https://git.kernel.org/stable/c/45bcf60fe49b37daab1acee57b27211ad1574042
- https://git.kernel.org/stable/c/1b34cbbf4f011a121ef7b2d7d6e6920a036d5285
Linux için istismar edilen diğer açıklar
| Eklenme | Açık | Ürün | Önem | Saldırı olasılığı |
|---|---|---|---|---|
| 18 Eyl 2026 | Improper Check for Unusual or Exceptional Conditions | Kernel | Kritik 9,8 | 3,3% |
| 18 Eyl 2026 | Out-of-Bounds Write | Kernel | Yüksek 8,8 | 0,9% |
| 27 Ağu 2026 | Unspecified | Kernel | Yüksek 7,8 | 0,7% |
| 26 Ağu 2026 | Out-of-Bounds Write | Kernel | Yüksek 7,8 | 8,9% |
| 2 Haz 2026 | Improper Authentication | Kernel | Yüksek 7,8 | 5,5% |
| 1 May 2026 | Incorrect Resource Transfer Between Spheres | Kernel | Yüksek 7,8 | 98% |
| 26 Oca 2026 | Integer Overflow | Kernel | Yüksek 7,8 | 15% |
| 6 Eki 2025 | Heap Out-of-Bounds Write | Kernel | Yüksek 8,3 | 79% |
Kaynaklar: Known Exploited Vulnerabilities (CISA, kamu malı), CVE records (cve.org) ve EPSS (FIRST). Saldırı olasılığı, birinin önümüzdeki 30 günde açığı istismar etmeye çalışacağına dair EPSS tahminidir.