CVE-2026-43124 (GCVE-0-2026-43124)
Vulnerability from cvelistv5
Published
2026-05-06 11:27
Modified
2026-05-23 16:06
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
pstore: ram_core: fix incorrect success return when vmap() fails
In persistent_ram_vmap(), vmap() may return NULL on failure.
If offset is non-zero, adding offset_in_page(start) causes the function
to return a non-NULL pointer even though the mapping failed.
persistent_ram_buffer_map() therefore incorrectly returns success.
Subsequent access to prz->buffer may dereference an invalid address
and cause crashes.
Add proper NULL checking for vmap() failures.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: 831b624df1b420c8f9281ed1307a8db23afb72df Version: 831b624df1b420c8f9281ed1307a8db23afb72df Version: 831b624df1b420c8f9281ed1307a8db23afb72df Version: 831b624df1b420c8f9281ed1307a8db23afb72df Version: 831b624df1b420c8f9281ed1307a8db23afb72df Version: 831b624df1b420c8f9281ed1307a8db23afb72df Version: 831b624df1b420c8f9281ed1307a8db23afb72df Version: 831b624df1b420c8f9281ed1307a8db23afb72df Version: 9095f19baae92afb978f8df77d19280fe291b337 Version: 36a9916189b46b78dbf4fa542739b464444f0537 Version: 1cd01dba1355e291f636555b1920625ed58c1623 Version: 7026e2457c5b0c0e8a81e65a8209b8420a437b4d Version: 1e5b387747ba285a64348b9a96b246d0b9d52b03 Version: d0028f48b33086cf6d8f87831a650866107b5785 Version: 3.16.62 ≤ Version: 3.18.123 ≤ Version: 4.4.158 ≤ Version: 4.9.129 ≤ Version: 4.14.72 ≤ Version: 4.18.10 ≤ |
||
{
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"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\npstore: ram_core: fix incorrect success return when vmap() fails\n\nIn persistent_ram_vmap(), vmap() may return NULL on failure.\n\nIf offset is non-zero, adding offset_in_page(start) causes the function\nto return a non-NULL pointer even though the mapping failed.\npersistent_ram_buffer_map() therefore incorrectly returns success.\n\nSubsequent access to prz-\u003ebuffer may dereference an invalid address\nand cause crashes.\n\nAdd proper NULL checking for vmap() failures."
}
],
"providerMetadata": {
"dateUpdated": "2026-05-23T16:06:20.362Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
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"url": "https://git.kernel.org/stable/c/d47234840aeb4182ed3ee795c578b1dfa9cbd25b"
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{
"url": "https://git.kernel.org/stable/c/49918dd52615097529811d21ec6074dd02ebe77c"
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{
"url": "https://git.kernel.org/stable/c/8baa234181f632cabacf73e4834a910859e9fcc9"
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{
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{
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},
{
"url": "https://git.kernel.org/stable/c/05363abc7625cf18c96e67f50673cd07f11da5e9"
}
],
"title": "pstore: ram_core: fix incorrect success return when vmap() fails",
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"cveMetadata": {
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"assignerShortName": "Linux",
"cveId": "CVE-2026-43124",
"datePublished": "2026-05-06T11:27:10.221Z",
"dateReserved": "2026-05-01T14:12:55.987Z",
"dateUpdated": "2026-05-23T16:06:20.362Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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