nfc: llcp: fix slab-out-of-bounds reads when logging service names
In the Linux kernel, the following vulnerability has been resolved: nfc: llcp: fix slab-out-of-bounds reads when logging service names nfc_llcp_wks_sap() and nfc_llcp_build_sdreq_tlv() pass non-null- terminated strings to pr_debug() using the %s format specifier. The buffers are allocated via kmemdup() or come from netlink attributes and are not guaranteed to be null-terminated, causing __dynamic_pr_debug() to read beyond the allocated region: KASAN: slab-out-of-bounds Read in __dynamic_pr_debug Fix both call sites by using %.*s with the explicit length to limit the output to the actual length of the string.
CVE-2026-98576
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-2026-98576
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": "d9b8d8e19b073096d3609bbd60f82148d128b555",
"lessThan": "75f7c5a42fa1483f5912279a749417c284ad708f",
"versionType": "git"
},
{
"status": "affected",
"version": "d9b8d8e19b073096d3609bbd60f82148d128b555",
"lessThan": "6d4ca872830e46fcca9c086bf19fa9bd2faf09d2",
"versionType": "git"
},
{
"status": "affected",
"version": "d9b8d8e19b073096d3609bbd60f82148d128b555",
"lessThan": "a143f7835faa4fe0178448289feea4f84eeee8d6",
"versionType": "git"
},
{
"status": "affected",
"version": "d9b8d8e19b073096d3609bbd60f82148d128b555",
"lessThan": "75bfd9ef4da2fb49dac1f19880d2ac4ccd07b45b",
"versionType": "git"
},
{
"status": "affected",
"version": "d9b8d8e19b073096d3609bbd60f82148d128b555",
"lessThan": "8afb6c194f5781798d3ab3edf243cf5a24a9d1f9",
"versionType": "git"
},
{
"status": "affected",
"version": "d9b8d8e19b073096d3609bbd60f82148d128b555",
"lessThan": "8978dff632519712d1fa432991e1f2e857f90239",
"versionType": "git"
},
{
"status": "affected",
"version": "d9b8d8e19b073096d3609bbd60f82148d128b555",
"lessThan": "4262b12277a3e056c95fc49e9c4d7bd97035d16c",
"versionType": "git"
},
{
"status": "affected",
"version": "d9b8d8e19b073096d3609bbd60f82148d128b555",
"lessThan": "7dcf371a35632f035baf77bcf2c129165f772ce4",
"versionType": "git"
}
],
"programFiles": [
"net/nfc/llcp_commands.c",
"net/nfc/llcp_core.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.10"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.10",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.271",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.222",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.189",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.158",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.112",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.55",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.9",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/nfc/llcp_commands.c",
"net/nfc/llcp_core.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98576
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #38596 · Revision 1
- Added to Heist Feed
- Publisher date