Name | CVE-2024-44965 |
Description | In the Linux kernel, the following vulnerability has been resolved: x86/mm: Fix pti_clone_pgtable() alignment assumption Guenter reported dodgy crashes on an i386-nosmp build using GCC-11 that had the form of endless traps until entry stack exhaust and then #DF from the stack guard. It turned out that pti_clone_pgtable() had alignment assumptions on the start address, notably it hard assumes start is PMD aligned. This is true on x86_64, but very much not true on i386. These assumptions can cause the end condition to malfunction, leading to a 'short' clone. Guess what happens when the user mapping has a short copy of the entry text? Use the correct increment form for addr to avoid alignment assumptions. |
Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
References | DLA-3912-1, ELA-1219-1 |
The table below lists information on source packages.
Source Package | Release | Version | Status |
---|---|---|---|
linux (PTS) | jessie, jessie (lts) | 3.16.84-1 | vulnerable |
stretch (security) | 4.9.320-2 | vulnerable | |
stretch (lts), stretch | 4.9.320-3 | vulnerable | |
buster (security), buster, buster (lts) | 4.19.316-1 | vulnerable | |
bullseye | 5.10.223-1 | vulnerable | |
bullseye (security) | 5.10.226-1 | fixed | |
bookworm | 6.1.106-3 | fixed | |
bookworm (security) | 6.1.112-1 | fixed | |
sid, trixie | 6.11.5-1 | fixed | |
linux-5.10 (PTS) | jessie, jessie (lts) | 5.10.226-1~deb8u1 | fixed |
stretch (lts), stretch | 5.10.226-1~deb9u1 | fixed | |
buster, buster (lts) | 5.10.226-1~deb10u1 | fixed | |
buster (security) | 5.10.218-1~deb10u1 | vulnerable |
The information below is based on the following data on fixed versions.
Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
---|---|---|---|---|---|---|
linux | source | jessie | (unfixed) | end-of-life | ||
linux | source | stretch | (unfixed) | end-of-life | ||
linux | source | buster | (unfixed) | end-of-life | ||
linux | source | bullseye | 5.10.226-1 | DLA-3912-1 | ||
linux | source | bookworm | 6.1.106-1 | |||
linux | source | (unstable) | 6.10.6-1 | |||
linux-5.10 | source | jessie | 5.10.226-1~deb8u1 | ELA-1219-1 | ||
linux-5.10 | source | stretch | 5.10.226-1~deb9u1 | ELA-1219-1 | ||
linux-5.10 | source | buster | 5.10.226-1~deb10u1 | ELA-1219-1 |
https://git.kernel.org/linus/41e71dbb0e0a0fe214545fe64af031303a08524c (6.11-rc2)