UnratedFix available
btrfs: dev-replace: properly validate device names
Type: advisorySources: OSV
In the Linux kernel, the following vulnerability has been resolved: btrfs: dev-replace: properly validate device names There's a syzbot report that device name buffers passed to device replace are not properly checked for string termination which could lead to a read out of bounds in getname_kernel(). Add a helper that validates both source and target device name buffers. For devid as the source initialize the buffer to empty string in case something tries to read it later. This was originally analyzed and fixed in a different way by Edward Adam Davis (see links).
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 4.19.309, 5.10.212, 5.15.151, 5.4.271, 6.1.81, 6.6.21, 6.7.9
- CVEs
- CVE-2024-26791
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 17:56 UTC · Revision 1
Source evidence
btrfs: dev-replace: properly validate device names
core-osv · Original sourcePublished 4 Apr 2024, 08:20 UTC
In the Linux kernel, the following vulnerability has been resolved: btrfs: dev-replace: properly validate device names There's a syzbot report that device name buffers passed to device replace are not properly checked for string termination which could lead to a read out of bounds in getname_kernel(). Add a helper that validates both source and target device name buffers. For devid as the source initialize the buffer to empty string in case something tries to read it later. This was originally analyzed and fixed in a different way by Edward Adam Davis (see links).
osv:CVE-2024-26791
Kernel
Fixed versions: 4.19.309, 5.4.271, 5.10.212, 5.15.151, 6.1.81, 6.6.21, 6.7.9
Complete source record
{
"id": "d282ea7b8fb43e689203ea265906f2dbc1a111f5788056b164d66a2656572ac4",
"url": "https://osv.dev/vulnerability/CVE-2024-26791",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "btrfs: dev-replace: properly validate device names",
"summary": "In the Linux kernel, the following vulnerability has been resolved: btrfs: dev-replace: properly validate device names There's a syzbot report that device name buffers passed to device replace are not properly checked for string termination which could lead to a read out of bounds in getname_kernel(). Add a helper that validates both source and target device name buffers. For devid as the source initialize the buffer to empty string in case something tries to read it later. This was originally analyzed and fixed in a different way by Edward Adam Davis (see links).",
"evidence": "osv:CVE-2024-26791",
"products": [
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"name": {
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"prerequisites": [],
"fixed_versions": [
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"value": "4.19.309",
"evidence": "/affected/1/ranges"
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{
"value": "5.4.271",
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{
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{
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{
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{
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{
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"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CVE-2024-26791",
"aliases": [
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"affected": [
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{
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{
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"events": [
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{
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{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.2.0"
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{
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},
{
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"events": [
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{
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],
"package": {
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"ecosystem": "Linux"
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"database_specific": {
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],
"modified": "2026-10-28T02:30:38.270527695Z",
"provider": "osv",
"references": [
"https://git.kernel.org/stable/c/11d7a2e429c02d51e2dc90713823ea8b8d3d3a84",
"https://git.kernel.org/stable/c/2886fe308a83968dde252302884a1e63351cf16d",
"https://git.kernel.org/stable/c/343eecb4ff49a7b1cc1dfe86958a805cf2341cfb",
"https://git.kernel.org/stable/c/9845664b9ee47ce7ee7ea93caf47d39a9d4552c4",
"https://git.kernel.org/stable/c/ab2d68655d0f04650bef09fee948ff80597c5fb9",
"https://git.kernel.org/stable/c/b1690ced4d2d8b28868811fb81cd33eee5aefee1",
"https://git.kernel.org/stable/c/c6652e20d7d783d060fe5f987eac7b5cabe31311",
"https://git.kernel.org/stable/c/f590040ce2b712177306b03c2a63b16f7d48d3c8",
"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html",
"https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/26xxx/CVE-2024-26791.json",
"https://nvd.nist.gov/vuln/detail/CVE-2024-26791",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
],
"provider_metadata": {
"cna_assigner": "Linux",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/26xxx/CVE-2024-26791.json"
}
},
"related_cves": [
{
"value": "CVE-2024-26791",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 505535,
"published_at": "2024-04-04T08:20:22.374+00:00"
}