CVE-2026-31435: Linux, друго

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: netfs: Fix read abandonment during retry Under certain circumstances, all the remaining subrequests from a read request will get abandoned during retry. The abandonment process expects the 'subreq' variable to be set to the place to start abandonment from, but it doesn't always have a useful value (it will be uninitialised on the first pass through the loop and it may point to a deleted subrequest on later passes). Fix the first jump to "abandon:" to set subreq to the start of the first subrequest expected to need retry (which, in this abandonment case, turned out unexpectedly to no longer have NEED_RETRY set). Also clear the subreq pointer after discarding superfluous retryable subrequests to cause an oops if we do try to access it.

Засегнати продукти

• Linux Linux: ee4cdf7ba857a894ad1650d6ab77669cbbfa329e преди 3e5fd8f53b575ff2188f82071da19c977ca56c41; ee4cdf7ba857a894ad1650d6ab77669cbbfa329e преди 8f2f2bd128a8d9edbc1e785760da54ada3df69b7; ee4cdf7ba857a894ad1650d6ab77669cbbfa329e преди 7e57523490cd2efb52b1ea97f2e0a74c0fb634cd
• Linux Linux: 6.12; преди 6.12; 6.18.21 до 6.18.*; 6.19.11 до 6.19.*; 7.0 до *

Вид слабост

• CWE-457 Използване на неинициализирана променлива

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-31435
• https://nvd.nist.gov/vuln/detail/CVE-2026-31435
• https://git.kernel.org/stable/c/3e5fd8f53b575ff2188f82071da19c977ca56c41
• https://git.kernel.org/stable/c/8f2f2bd128a8d9edbc1e785760da54ada3df69b7
• https://git.kernel.org/stable/c/7e57523490cd2efb52b1ea97f2e0a74c0fb634cd