9.1
CVSS 3.1
Няма данни
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Няма потвърждение
Атакува се
Няма данни
Време до експлоатация
Атакува се по мрежата, без особени условия, без вход и без действие от потребителя.
- Експлоатация: няма данни за експлоатация
- Атаката може да се автоматизира
Описание
Оригинално описание
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conntrack_h323: check for zero length in DecodeQ931() In DecodeQ931(), the UserUserIE code path reads a 16-bit length from the packet, then decrements it by 1 to skip the protocol discriminator byte before passing it to DecodeH323_UserInformation(). If the encoded length is 0, the decrement wraps to -1, which is then passed as a large value to the decoder, leading to an out-of-bounds read. Add a check to ensure len is positive after the decrement.
Засегнати продукти
- Linux Linux: 5e35941d990123f155b02d5663e51a24f816b6f3 преди 2121f5fbe88daff0f1fc5bc47d359426c74b86b0; 5e35941d990123f155b02d5663e51a24f816b6f3 преди 65fa92f79677858b14b9e4b7275f26639afe2710; 5e35941d990123f155b02d5663e51a24f816b6f3 преди 495e97af9e7249ee02b72bb1d0848a6efc3700f4; 5e35941d990123f155b02d5663e51a24f816b6f3 преди f5e4f4e4cdb75ec36802059a94195a31f193da60; 5e35941d990123f155b02d5663e51a24f816b6f3 преди 633e8f87dad32263f6a57dccdb873f042c062111; 5e35941d990123f155b02d5663e51a24f816b6f3 преди 9d00fe7d6d7c5b5f1065a6e042b54f2e44bd6df8; 5e35941d990123f155b02d5663e51a24f816b6f3 преди b652b05d51003ac074b912684f9ec7486231717b; 5e35941d990123f155b02d5663e51a24f816b6f3 преди f173d0f4c0f689173f8cdac79991043a4a89bf66
- Linux Linux: 2.6.17; преди 2.6.17; 5.10.253 до 5.10.*; 5.15.203 до 5.15.*; 6.1.167 до 6.1.*; 6.6.130 до 6.6.*; 6.12.78 до 6.12.*; 6.18.20 до 6.18.*; 6.19.10 до 6.19.*; 7.0 до *
- Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP: V3.1.6 преди *
- Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP: V3.1.6 преди *
- Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP: V3.1.6 преди *
Вид слабост
История
- 3 април 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-23455
- https://nvd.nist.gov/vuln/detail/CVE-2026-23455
- https://git.kernel.org/stable/c/2121f5fbe88daff0f1fc5bc47d359426c74b86b0
- https://git.kernel.org/stable/c/65fa92f79677858b14b9e4b7275f26639afe2710
- https://git.kernel.org/stable/c/495e97af9e7249ee02b72bb1d0848a6efc3700f4
- https://git.kernel.org/stable/c/f5e4f4e4cdb75ec36802059a94195a31f193da60
- https://git.kernel.org/stable/c/633e8f87dad32263f6a57dccdb873f042c062111
- https://git.kernel.org/stable/c/9d00fe7d6d7c5b5f1065a6e042b54f2e44bd6df8
- https://git.kernel.org/stable/c/b652b05d51003ac074b912684f9ec7486231717b
- https://git.kernel.org/stable/c/f173d0f4c0f689173f8cdac79991043a4a89bf66
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html