{ "dataType": "CVE_RECORD", "cveMetadata": { "cveId": "CVE-2024-27045", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-02-19T14:20:24.213Z", "datePublished": "2024-05-01T12:54:18.138Z", "dateUpdated": "2026-08-05T11:29:12.070Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:29:12.070Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Fix a potential buffer overflow in 'dp_dsc_clock_en_read()'\n\nTell snprintf() to store at most 10 bytes in the output buffer\ninstead of 30.\n\nFixes the below:\ndrivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_debugfs.c:1508 dp_dsc_clock_en_read() error: snprintf() is printing too much 30 vs 10" } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The vulnerable code is a debugfs `.read` handler reached only by opening and reading /sys/kernel/debug/dri/N/DP-X/dsc_clock_en through the local VFS. There is no network, adjacent-network, or physical path into `dp_dsc_clock_en_read()`.\nAC:H - The overflow can only occur if `dsc_state.dsc_clock_en` formats to 10 or more characters, but that value is extracted from the DSC_TOP_CONTROL.DSC_CLOCK_EN register whose mask is 0x00000001 on every ASIC generation, so it is always 0 or 1 — a bound the attacker cannot influence. Triggering the mis-sized `snprintf()` is trivial, but making it actually write out of bounds depends on hardware register state entirely outside attacker control.\nPR:L - The node is created with mode 0644 and requires no capability check in the read path, so any local account able to traverse debugfs can reach it — the norm on Android, ChromeOS, embedded graphics stacks and IGT/debug setups that grant a non-root graphics account access to /sys/kernel/debug/dri. This matches the PR:L already assigned to the analogous amdgpu debugfs read in CVE-2024-35795.\nUI:N - The attacker simply reads the file; no victim action, modeset, or privileged helper invocation is needed. The DisplayPort/eDP connector node exists automatically whenever the amdgpu display driver has bound to the GPU.\nS:U - The affected `rd_buf` allocation and any resulting slab corruption live entirely within the kernel's own security authority. No VM, hypervisor, IOMMU, or sandbox boundary is crossed.\nC:H - Under the potential-overflow framing, the mis-sized `snprintf()` bound permits a heap out-of-bounds write past a 10-byte kcalloc allocation, and per scoring guidance memory corruption of this kind is treated as leverageable for kernel information disclosure. The read-back loop itself is bounded by `rd_buf_size` and the buffer is zeroed by kcalloc, so there is no direct read primitive.\nI:H - An out-of-bounds heap write is scored as High integrity impact, since corruption of slab contents beyond the allocated 10 bytes is the classic primitive for control-flow hijacking. The written bytes are the ASCII rendering of a kernel-controlled value rather than attacker-chosen data, which limits practical exploitability.\nA:H - Writing past the end of the kmalloc'd buffer corrupts allocator state adjacent to the object and trips redzone/KASAN out-of-bounds checks, either of which results in a kernel oops or panic. Any such heap corruption is scored as a full availability loss." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c" ], "versions": [ { "version": "c06e09b76639657f284bfaf1cce29557a2515e85", "lessThan": "ff28893c96c5e0927a4da10cd24a3522ca663515", "status": "affected", "versionType": "git" }, { "version": "c06e09b76639657f284bfaf1cce29557a2515e85", "lessThan": "440f059837418fac1695b65d3ebc6080d33be877", "status": "affected", "versionType": "git" }, { "version": "c06e09b76639657f284bfaf1cce29557a2515e85", "lessThan": "d346b3e5b25c95d504478507eb867cd3818775ab", "status": "affected", "versionType": "git" }, { "version": "c06e09b76639657f284bfaf1cce29557a2515e85", "lessThan": "ad76fd30557d6a106c481e4606a981221ca525f7", "status": "affected", "versionType": "git" }, { "version": "c06e09b76639657f284bfaf1cce29557a2515e85", "lessThan": "eb9327af3621d26b1d83f767c97a3fe8191a3a65", "status": "affected", "versionType": "git" }, { "version": "c06e09b76639657f284bfaf1cce29557a2515e85", "lessThan": "cf114d8d4a8d78df272116a745bb43b48cef65f4", "status": "affected", "versionType": "git" }, { "version": "c06e09b76639657f284bfaf1cce29557a2515e85", "lessThan": "4b09715f1504f1b6e8dff0e9643630610bc05141", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c" ], "versions": [ { "version": "5.9", "status": "affected" }, { "version": "0", "lessThan": "5.9", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.214", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.153", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.83", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.23", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.7.11", "lessThanOrEqual": "6.7.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.8.2", "lessThanOrEqual": "6.8.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.9", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.9", "versionEndExcluding": "5.10.214" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.9", "versionEndExcluding": "5.15.153" }, { "vulnerable": true, "criteria": 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