# CVE-2022-49261: linux: In the Linux kernel, the following vulnerability has been resolved:  drm/i915/gem: add missing boundary check in vm_a...

CVE-2022-49261 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-49261, released February 26, 2025. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2022-49261
- Priority: High
- CVSS: 7.8 (high)
- EPSS: 0.0029
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Feb 26, 2025

## Description

In the Linux kernel, the following vulnerability has been resolved:  drm/i915/gem: add missing boundary check in vm_access  A missing bounds check in vm_access() can lead to an out-of-bounds read or write in the adjacent memory area, since the len attribute is not validated before the memcpy later in the function, potentially hitting:  [  183.637831] BUG: unable to handle page fault for address: ffffc90000c86000 [  183.637934] #PF: supervisor read access in kernel mode [  183.637997] #PF: error_code(0x0000) - not-present page [  183.638059] PGD 100000067 P4D 100000067 PUD 100258067 PMD 106341067 PTE 0 [  183.638144] Oops: 0000 [#2] PREEMPT SMP NOPTI [  183.638201] CPU: 3 PID: 1790 Comm: poc Tainted: G      D           5.17.0-rc6-ci-drm-11296+ #1 [  183.638298] Hardware name: Intel Corporation CoffeeLake Client Platform/CoffeeLake H DDR4 RVP, BIOS CNLSFWR1.R00.X208.B00.1905301319 05/30/2019 [  183.638430] RIP: 0010:memcpy_erms+0x6/0x10 [  183.640213] RSP: 0018:ffffc90001763d48 EFLAGS: 00010246 [  183.641117] RAX: ffff888109c14000 RBX: ffff888111bece40 RCX: 0000000000000ffc [  183.642029] RDX: 0000000000001000 RSI: ffffc90000c86000 RDI: ffff888109c14004 [  183.642946] RBP: 0000000000000ffc R08: 800000000000016b R09: 0000000000000000 [  183.643848] R10: ffffc90000c85000 R11: 0000000000000048 R12: 0000000000001000 [  183.644742] R13: ffff888111bed190 R14: ffff888109c14000 R15: 0000000000001000 [  183.645653] FS:  00007fe5ef807540(0000) GS:ffff88845b380000(0000) knlGS:0000000000000000 [  183.646570] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [  183.647481] CR2: ffffc90000c86000 CR3: 000000010ff02006 CR4: 00000000003706e0 [  183.648384] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [  183.649271] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [  183.650142] Call Trace: [  183.650988]  <TASK> [  183.651793]  vm_access+0x1f0/0x2a0 [i915] [  183.652726]  __access_remote_vm+0x224/0x380 [  183.653561]  mem_rw.isra.0+0xf9/0x190 [  183.654402]  vfs_read+0x9d/0x1b0 [  183.655238]  ksys_read+0x63/0xe0 [  183.656065]  do_syscall_64+0x38/0xc0 [  183.656882]  entry_SYSCALL_64_after_hwframe+0x44/0xae [  183.657663] RIP: 0033:0x7fe5ef725142 [  183.659351] RSP: 002b:00007ffe1e81c7e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [  183.660227] RAX: ffffffffffffffda RBX: 0000557055dfb780 RCX: 00007fe5ef725142 [  183.661104] RDX: 0000000000001000 RSI: 00007ffe1e81d880 RDI: 0000000000000005 [  183.661972] RBP: 00007ffe1e81e890 R08: 0000000000000030 R09: 0000000000000046 [  183.662832] R10: 0000557055dfc2e0 R11: 0000000000000246 R12: 0000557055dfb1c0 [  183.663691] R13: 00007ffe1e81e980 R14: 0000000000000000 R15: 0000000000000000  Changes since v1:      - Updated if condition with range_overflows_t [Chris Wilson]  [mauld: tidy up the commit message and add Cc: stable] (cherry picked from commit 661412e301e2ca86799aa4f400d1cf0bd38c57c6)

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 5.17.3-1 | [DEBIAN-CVE-2022-49261](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49261.md) | Feb 26, 2025 |
| Linux | linux Debian 13.5 (trixie) | 5.17.3-1 | [DEBIAN-CVE-2022-49261](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49261.md) | Feb 26, 2025 |
| Linux | linux Debian 14 | 5.17.3-1 | [DEBIAN-CVE-2022-49261](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49261.md) | Feb 26, 2025 |

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