Name | CVE-2021-3640 |
Description | A flaw use-after-free in function sco_sock_sendmsg() of the Linux kernel HCI subsystem was found in the way user calls ioct UFFDIO_REGISTER or other way triggers race condition of the call sco_conn_del() together with the call sco_sock_sendmsg() with the expected controllable faulting memory page. A privileged local user could use this flaw to crash the system or escalate their privileges on the system. |
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-2940-1, DLA-2941-1, DSA-5096-1, ELA-577-1 |
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 | fixed | |
stretch (lts), stretch | 4.9.320-3 | fixed | |
buster (security), buster, buster (lts) | 4.19.316-1 | fixed | |
bullseye | 5.10.223-1 | fixed | |
bullseye (security) | 5.10.226-1 | fixed | |
bookworm | 6.1.106-3 | fixed | |
bookworm (security) | 6.1.112-1 | fixed | |
trixie | 6.11.4-1 | fixed | |
sid | 6.11.5-1 | fixed | |
linux-4.19 (PTS) | stretch (security) | 4.19.232-1~deb9u1 | fixed |
stretch (lts), stretch | 4.19.316-1~deb9u1 | fixed | |
linux-4.9 (PTS) | jessie, jessie (lts) | 4.9.303-1~deb8u3 | fixed |
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 | 4.9.303-1 | DLA-2940-1 | ||
linux | source | buster | 4.19.232-1 | DSA-5096-1 | ||
linux | source | bullseye | 5.10.84-1 | |||
linux | source | (unstable) | 5.15.3-1 | |||
linux-4.19 | source | stretch | 4.19.232-1~deb9u1 | DLA-2941-1 | ||
linux-4.9 | source | jessie | 4.9.303-1~deb8u1 | ELA-577-1 |
https://www.openwall.com/lists/oss-security/2021/07/22/1