CVSS 3.1
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се от съседна мрежа, без особени условия, без вход и без действие от потребителя.
- Експлоатация: няма данни за експлоатация
- Атаката не може да се автоматизира
Описание
Оригинално описание
In the Linux kernel, the following vulnerability has been resolved: macsec: fix replay protection at XPN lower-PN wrap In macsec_post_decrypt(), when pn is U32_MAX, pn + 1 overflows u32 to 0 and the first branch never fires. If next_pn_halves.lower is also in the upper half, pn_same_half(pn, lower) is true and the XPN else-if does not fire either, leaving next_pn_halves unchanged. An attacker that captures the legitimate frame carrying pn == 0xFFFFFFFF on an XPN association can then replay it indefinitely, since lowest_pn never rises above the captured pn and macsec_decrypt() reconstructs the same IV. Extend the XPN else-if to also fire when pn + 1 wraps to 0, so receipt of pn == U32_MAX advances next_pn_halves to (upper + 1, 0).
Засегнати продукти
- Linux Linux: a21ecf0e033807b976967286e6c392f48ee2049f преди dd7306779c6ce1238f4cdc34f3c1f2246b854457; a21ecf0e033807b976967286e6c392f48ee2049f преди d15130461df388136b62a7b0ce9f66e7e2fa9ff1; a21ecf0e033807b976967286e6c392f48ee2049f преди 23c0e230eab397d7f68be2538790ac41d3bb91fd; a21ecf0e033807b976967286e6c392f48ee2049f преди 679e13a65e68a67c8b3c0467c02ee89157ec6f0f; a21ecf0e033807b976967286e6c392f48ee2049f преди 79495a1b0944fe31ffd54b54b00211b493590d62; a21ecf0e033807b976967286e6c392f48ee2049f преди 6d00f5c7e5ff7ec4795b7f5f8ed88bd346641652; a21ecf0e033807b976967286e6c392f48ee2049f преди d55acbe577db892b60547b6ef1c020b359331a6d; a21ecf0e033807b976967286e6c392f48ee2049f преди e68842b3356471ba56c882209f324613dac47f64
- Linux Linux: 5.7; преди 5.7; 5.10.259 до 5.10.*; 5.15.210 до 5.15.*; 6.1.176 до 6.1.*; 6.6.143 до 6.6.*; 6.12.93 до 6.12.*; 6.18.35 до 6.18.*; 7.0.12 до 7.0.*; от 7.1 нататък
Вид слабост
История
- 19 юли 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-63925
- https://nvd.nist.gov/vuln/detail/CVE-2026-63925
- https://git.kernel.org/stable/c/dd7306779c6ce1238f4cdc34f3c1f2246b854457
- https://git.kernel.org/stable/c/d15130461df388136b62a7b0ce9f66e7e2fa9ff1
- https://git.kernel.org/stable/c/23c0e230eab397d7f68be2538790ac41d3bb91fd
- https://git.kernel.org/stable/c/679e13a65e68a67c8b3c0467c02ee89157ec6f0f
- https://git.kernel.org/stable/c/79495a1b0944fe31ffd54b54b00211b493590d62
- https://git.kernel.org/stable/c/6d00f5c7e5ff7ec4795b7f5f8ed88bd346641652
- https://git.kernel.org/stable/c/d55acbe577db892b60547b6ef1c020b359331a6d
- https://git.kernel.org/stable/c/e68842b3356471ba56c882209f324613dac47f64