bpf: Preserve pointer state for commuted arithmetic
In the Linux kernel, the following vulnerability has been resolved: bpf: Preserve pointer state for commuted arithmetic When scalar += pointer is handled in adjust_ptr_min_max_vals(), the destination register inherits the pointer state from the source pointer. Copying only selected fields is fragile because pointer provenance is tracked by several bpf_reg_state fields. Use the caller's temporary offset register to preserve the scalar operand while replacing the destination with the full pointer state. This preserves the frame number for PTR_TO_STACK registers and keeps parent identity fields consistent.
CVE-2026-74720
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-2026-74720
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": "f4d7e40a5b7157e1329c3c5b10f60d8289fc2941",
"lessThan": "86b203aadc2930e0a4f9c6277b5b80ff3664c472",
"versionType": "git"
},
{
"status": "affected",
"version": "f4d7e40a5b7157e1329c3c5b10f60d8289fc2941",
"lessThan": "8109c25e0c41f5f19a1c2380bb49c991a877494e",
"versionType": "git"
},
{
"status": "affected",
"version": "f4d7e40a5b7157e1329c3c5b10f60d8289fc2941",
"lessThan": "d1959028190a7649b926f5867a58de5fe221b23c",
"versionType": "git"
},
{
"status": "affected",
"version": "f4d7e40a5b7157e1329c3c5b10f60d8289fc2941",
"lessThan": "8cb23101a3fcc7432b451ea3d0f14a90711f4acf",
"versionType": "git"
},
{
"status": "affected",
"version": "f4d7e40a5b7157e1329c3c5b10f60d8289fc2941",
"lessThan": "29c239f8dbec5ab33a61796724d189bddee6cd4b",
"versionType": "git"
},
{
"status": "affected",
"version": "f4d7e40a5b7157e1329c3c5b10f60d8289fc2941",
"lessThan": "db6382ed3361bdd8129572a3423956cba1dae829",
"versionType": "git"
},
{
"status": "affected",
"version": "f4d7e40a5b7157e1329c3c5b10f60d8289fc2941",
"lessThan": "eaffa1495e4fe6330aeff9f323ea3d48b01f118a",
"versionType": "git"
},
{
"status": "affected",
"version": "f4d7e40a5b7157e1329c3c5b10f60d8289fc2941",
"lessThan": "a4c6f804b44c5c790269b25e0e61cf4e9f117c86",
"versionType": "git"
}
],
"programFiles": [
"kernel/bpf/verifier.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.16"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.16",
"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": "6.6.152",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.104",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.45",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.9",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"kernel/bpf/verifier.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-74720
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #34283 · Revision 1
- Added to Heist Feed
- Publisher date