phonet: pep: fix use-after-free in pep_get_sb()
In the Linux kernel, the following vulnerability has been resolved: phonet: pep: fix use-after-free in pep_get_sb() pep_get_sb() doesn't consider that pskb_may_pull() might have relocated the skb data, and continue to access the older pointer, causing UAF. Reproduced under KASAN: BUG: KASAN: slab-use-after-free in pep_get_sb+0x234/0x3b0 Read of size 1 at addr ff11000105510f50 by task repro/157 pep_get_sb+0x234/0x3b0 pipe_handler_do_rcv+0x5f7/0xa10 pep_do_rcv+0x203/0x410 __sk_receive_skb+0x471/0x4a0 phonet_rcv+0x5b3/0x6c0 __netif_receive_skb+0xcc/0x1d0 Refetch the header with skb_header_pointer() after pskb_may_pull(), so the possibly stale pointer is no longer dereferenced. There are better ways to solve this, but, this is the less instrusive one.
CVE-2026-68144
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-68144
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "9641458d3ec42def729fde64669abf07f3220cd5",
"lessThan": "c4a52cb4da8d57d060b1d52085d25147a238dac2",
"versionType": "git"
},
{
"status": "affected",
"version": "9641458d3ec42def729fde64669abf07f3220cd5",
"lessThan": "df198743859fefba2f824115f8151dd62d7ad6d8",
"versionType": "git"
},
{
"status": "affected",
"version": "9641458d3ec42def729fde64669abf07f3220cd5",
"lessThan": "1d81e19fc57a5ee55b4497d01bc0510d76fb9578",
"versionType": "git"
},
{
"status": "affected",
"version": "9641458d3ec42def729fde64669abf07f3220cd5",
"lessThan": "8d931a75a38b9bb584a4071f5ebbd52755fc35ee",
"versionType": "git"
},
{
"status": "affected",
"version": "9641458d3ec42def729fde64669abf07f3220cd5",
"lessThan": "17f78c0c0d41d738ee236eb6e841e39395188054",
"versionType": "git"
},
{
"status": "affected",
"version": "9641458d3ec42def729fde64669abf07f3220cd5",
"lessThan": "a48a889b60f73edb0399a8b08284a2ab0bd0295f",
"versionType": "git"
},
{
"status": "affected",
"version": "9641458d3ec42def729fde64669abf07f3220cd5",
"lessThan": "25e3641beb51333bfbb155af2fd2573a61113af2",
"versionType": "git"
},
{
"status": "affected",
"version": "9641458d3ec42def729fde64669abf07f3220cd5",
"lessThan": "0f71f852a96af9685858ce59fda34ecbf85c283d",
"versionType": "git"
}
],
"programFiles": [
"net/phonet/pep.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.28"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "2.6.28",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.265",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.216",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.183",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.148",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.101",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.42",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.6",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/phonet/pep.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-68144
Source reference:
/cveMetadata/cveId
Publisher severity
critical
Source reference: /containers/cna/metrics
- Event
- #41135 · Revision 1
- Added to Heist Feed
- Publisher date