GHSA-WPFC-GX92-F98V
Vulnerability from github – Published: 2024-11-07 12:30 – Updated: 2025-11-04 00:31In the Linux kernel, the following vulnerability has been resolved:
drm/msm: Avoid NULL dereference in msm_disp_state_print_regs()
If the allocation in msm_disp_state_dump_regs() failed then
block->state can be NULL. The msm_disp_state_print_regs() function
does have code to try to handle it with:
if (reg) dump_addr = reg;
...but since "dump_addr" is initialized to NULL the above is actually
a noop. The code then goes on to dereference dump_addr.
Make the function print "Registers not stored" when it sees a NULL to
solve this. Since we're touching the code, fix
msm_disp_state_print_regs() not to pointlessly take a double-pointer
and properly mark the pointer as const.
Patchwork: https://patchwork.freedesktop.org/patch/619657/
{
"affected": [],
"aliases": [
"CVE-2024-50156"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-11-07T10:15:07Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/msm: Avoid NULL dereference in msm_disp_state_print_regs()\n\nIf the allocation in msm_disp_state_dump_regs() failed then\n`block-\u003estate` can be NULL. The msm_disp_state_print_regs() function\n_does_ have code to try to handle it with:\n\n if (*reg)\n dump_addr = *reg;\n\n...but since \"dump_addr\" is initialized to NULL the above is actually\na noop. The code then goes on to dereference `dump_addr`.\n\nMake the function print \"Registers not stored\" when it sees a NULL to\nsolve this. Since we\u0027re touching the code, fix\nmsm_disp_state_print_regs() not to pointlessly take a double-pointer\nand properly mark the pointer as `const`.\n\nPatchwork: https://patchwork.freedesktop.org/patch/619657/",
"id": "GHSA-wpfc-gx92-f98v",
"modified": "2025-11-04T00:31:57Z",
"published": "2024-11-07T12:30:35Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-50156"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/293f53263266bc4340d777268ab4328a97f041fa"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/42cf045086feae77b212f0f66e742b91a5b566b7"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/563aa81fd66a4e7e6e551a0e02bcc23957cafe2f"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e8e9f2a12a6214080c8ea83220a596f6e1dedc6c"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f7ad916273483748582d97cfa31054ccb19224f3"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
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