CVE-2024-41087: ata: libata-core: Fix double free on error
First published: Mon Jul 29 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: ata: libata-core: Fix double free on error If e.g. the ata_port_alloc() call in ata_host_alloc() fails, we will jump to the err_out label, which will call devres_release_group(). devres_release_group() will trigger a call to ata_host_release(). ata_host_release() calls kfree(host), so executing the kfree(host) in ata_host_alloc() will lead to a double free: kernel BUG at mm/slub.c:553! Oops: invalid opcode: 0000 [#1] PREEMPT SMP NOPTI CPU: 11 PID: 599 Comm: (udev-worker) Not tainted 6.10.0-rc5 #47 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-2.fc40 04/01/2014 RIP: 0010:kfree+0x2cf/0x2f0 Code: 5d 41 5e 41 5f 5d e9 80 d6 ff ff 4d 89 f1 41 b8 01 00 00 00 48 89 d9 48 89 da RSP: 0018:ffffc90000f377f0 EFLAGS: 00010246 RAX: ffff888112b1f2c0 RBX: ffff888112b1f2c0 RCX: ffff888112b1f320 RDX: 000000000000400b RSI: ffffffffc02c9de5 RDI: ffff888112b1f2c0 RBP: ffffc90000f37830 R08: 0000000000000000 R09: 0000000000000000 R10: ffffc90000f37610 R11: 617461203a736b6e R12: ffffea00044ac780 R13: ffff888100046400 R14: ffffffffc02c9de5 R15: 0000000000000006 FS: 00007f2f1cabe980(0000) GS:ffff88813b380000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2f1c3acf75 CR3: 0000000111724000 CR4: 0000000000750ef0 PKRU: 55555554 Call Trace: <TASK> ? __die_body.cold+0x19/0x27 ? die+0x2e/0x50 ? do_trap+0xca/0x110 ? do_error_trap+0x6a/0x90 ? kfree+0x2cf/0x2f0 ? exc_invalid_op+0x50/0x70 ? kfree+0x2cf/0x2f0 ? asm_exc_invalid_op+0x1a/0x20 ? ata_host_alloc+0xf5/0x120 [libata] ? ata_host_alloc+0xf5/0x120 [libata] ? kfree+0x2cf/0x2f0 ata_host_alloc+0xf5/0x120 [libata] ata_host_alloc_pinfo+0x14/0xa0 [libata] ahci_init_one+0x6c9/0xd20 [ahci] Ensure that we will not call kfree(host) twice, by performing the kfree() only if the devres_open_group() call failed.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | >=4.17<4.19.317 | |
| Linux Linux kernel | >=4.20<5.4.279 | |
| Linux Linux kernel | >=5.5<5.10.221 | |
| Linux Linux kernel | >=5.11<5.15.162 | |
| Linux Linux kernel | >=5.16<6.1.97 | |
| Linux Linux kernel | >=6.2<6.6.37 | |
| Linux Linux kernel | >=6.7<6.9.8 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.115-1 6.1.112-1 6.11.7-1 6.11.9-1 |
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Reference Links
- https://git.kernel.org/stable/c/010de9acbea58fbcbda08e3793d6262086a493fe
- https://git.kernel.org/stable/c/062e256516d7db5e7dcdef117f52025cd5c456e3
- https://git.kernel.org/stable/c/290073b2b557e4dc21ee74a1e403d9ae79e393a2
- https://git.kernel.org/stable/c/56f1c7e290cd6c69c948fcd2e2a49e6a637ec38f
- https://git.kernel.org/stable/c/5dde5f8b790274723640d29a07c5a97d57d62047
- https://git.kernel.org/stable/c/702c1edbafb2e6f9d20f6d391273b5be09d366a5
- https://git.kernel.org/stable/c/8106da4d88bbaed809e023cc8014b766223d6e76
- https://git.kernel.org/stable/c/ab9e0c529eb7cafebdd31fe1644524e80a48b05d
- https://git.kernel.org/linus/ab9e0c529eb7cafebdd31fe1644524e80a48b05d
- https://security-tracker.debian.org/tracker/CVE-2024-41087
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-41087
- https://nvd.nist.gov/vuln/detail/CVE-2024-41087
- https://launchpad.net/bugs/cve/CVE-2024-41087
- https://ubuntu.com/security/CVE-2024-41087
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