CVE-2026-97910

CVE CVE-2026-97910EUVD EUVD-2026-86764Published 2026-09-25T10:22:34.000ZLast changed 2026-09-25T14:41:36.000ZCVSS 7.8

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: ASoC: sprd: validate compress buffer sizes against fixed allocations sprd_platform_compr_open() allocates the stage 0 IRAM buffer (32K data area) and the stage 1 DDR buffer (2M data area) with fixed sizes, but sprd_platform_compr_copy() derives all copy lengths from the user controlled runtime->fragment_size and the write() count, never comparing them against the physical buffer sizes. The compress core only checks fragment_size * fragments for an u32 overflow in snd_compress_check_input(), so a local user can configure a logical buffer of up to ~4GB via SNDRV_COMPRESS_SET_PARAMS, far exceeding the fixed allocations. A fragment_size larger than the 32K IRAM data area makes the stage 0 copy_from_user() overflow past the IRAM allocation, and a buffer_size larger than the 2M DDR buffer makes the wrapping copy at the end of sprd_platform_compr_copy() write fully user controlled data past the buffer. No SNDRV_PCM_TRIGGER_START is needed, a write() in SETUP state reaches the copy callback directly. Reject parameters that do not fit into the fixed buffers in set_params(), and fix the advertised max fragment size: 128K never fitted into the 32K IRAM buffer. The caps values may have been carried over from the qdsp6 driver, which allocates its buffers according to the advertised maxima, unlike this driver. With 32K as max fragment size the advertised limits are self-consistent: 32K * 64 = 2M equals the DDR buffer size. Discovered by Atuin - Automated Vulnerability Discovery Engine.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

• Linux — Linux cce1396936ef2b347d622b4d49718818eb32029d <7a4ce92d150b9e7ecf1a710a34d8cdeb590d3751; patch: 6.18.53; 5.2; patch: 6.12.111; cce1396936ef2b347d622b4d49718818eb32029d <8064b73997f137c00a7e2e38295a763f9423928b; cce1396936ef2b347d622b4d49718818eb32029d <38a9bb5221bcdece5507299f739c6751d8fc16b2; patch: 0; patch: 7.2.7; cce1396936ef2b347d622b4d49718818eb32029d <ff63b0adc4f6a5b61c8393d204fac44c594c4d39; patch: 7.3-rc3

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

• Linux — Linux

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