CVE-2024-40978: scsi: qedi: Fix crash while reading debugfs attribute
First published: Fri Jul 12 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: scsi: qedi: Fix crash while reading debugfs attribute The qedi_dbg_do_not_recover_cmd_read() function invokes sprintf() directly on a __user pointer, which results into the crash. To fix this issue, use a small local stack buffer for sprintf() and then call simple_read_from_buffer(), which in turns make the copy_to_user() call. BUG: unable to handle page fault for address: 00007f4801111000 PGD 8000000864df6067 P4D 8000000864df6067 PUD 864df7067 PMD 846028067 PTE 0 Oops: 0002 [#1] PREEMPT SMP PTI Hardware name: HPE ProLiant DL380 Gen10/ProLiant DL380 Gen10, BIOS U30 06/15/2023 RIP: 0010:memcpy_orig+0xcd/0x130 RSP: 0018:ffffb7a18c3ffc40 EFLAGS: 00010202 RAX: 00007f4801111000 RBX: 00007f4801111000 RCX: 000000000000000f RDX: 000000000000000f RSI: ffffffffc0bfd7a0 RDI: 00007f4801111000 RBP: ffffffffc0bfd7a0 R08: 725f746f6e5f6f64 R09: 3d7265766f636572 R10: ffffb7a18c3ffd08 R11: 0000000000000000 R12: 00007f4881110fff R13: 000000007fffffff R14: ffffb7a18c3ffca0 R15: ffffffffc0bfd7af FS: 00007f480118a740(0000) GS:ffff98e38af00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4801111000 CR3: 0000000864b8e001 CR4: 00000000007706e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 PKRU: 55555554 Call Trace: <TASK> ? __die_body+0x1a/0x60 ? page_fault_oops+0x183/0x510 ? exc_page_fault+0x69/0x150 ? asm_exc_page_fault+0x22/0x30 ? memcpy_orig+0xcd/0x130 vsnprintf+0x102/0x4c0 sprintf+0x51/0x80 qedi_dbg_do_not_recover_cmd_read+0x2f/0x50 [qedi 6bcfdeeecdea037da47069eca2ba717c84a77324] full_proxy_read+0x50/0x80 vfs_read+0xa5/0x2e0 ? folio_add_new_anon_rmap+0x44/0xa0 ? set_pte_at+0x15/0x30 ? do_pte_missing+0x426/0x7f0 ksys_read+0xa5/0xe0 do_syscall_64+0x58/0x80 ? __count_memcg_events+0x46/0x90 ? count_memcg_event_mm+0x3d/0x60 ? handle_mm_fault+0x196/0x2f0 ? do_user_addr_fault+0x267/0x890 ? exc_page_fault+0x69/0x150 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f4800f20b4d
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <4.19.317 | 4.19.317 |
| redhat/kernel | <5.4.279 | 5.4.279 |
| redhat/kernel | <5.10.221 | 5.10.221 |
| redhat/kernel | <5.15.162 | 5.15.162 |
| redhat/kernel | <6.1.96 | 6.1.96 |
| redhat/kernel | <6.6.36 | 6.6.36 |
| redhat/kernel | <6.9.7 | 6.9.7 |
| redhat/kernel | <6.10 | 6.10 |
| IBM Security Verify Governance - Identity Manager | <=ISVG 10.0.2 | |
| IBM Security Verify Governance, Identity Manager Software Stack | <=ISVG 10.0.2 | |
| IBM Security Verify Governance, Identity Manager Virtual Appliance | <=ISVG 10.0.2 | |
| IBM Security Verify Governance Identity Manager Container | <=ISVG 10.0.2 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.128-1 6.12.21-1 6.12.22-1 | |
| debian/linux-6.1 | 6.1.129-1~deb11u1 |
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Reference Links
- https://git.kernel.org/stable/c/144d76a676b630e321556965011b00e2de0b40a7
- https://git.kernel.org/stable/c/21c963de2e86e88f6a8ca556bcebb8e62ab8e901
- https://git.kernel.org/stable/c/28027ec8e32ecbadcd67623edb290dad61e735b5
- https://git.kernel.org/stable/c/397a8990c377ee4b61d6df768e61dff9e316d46b
- https://git.kernel.org/stable/c/56bec63a7fc87ad50b3373a87517dc9770eef9e0
- https://git.kernel.org/stable/c/e2f433ea7d0ff77998766a088a287337fb43ad75
- https://git.kernel.org/stable/c/eaddb86637669f6bad89245ee63f8fb2bfb50241
- https://git.kernel.org/stable/c/fa85b016a56b9775a3fe41e5d26e666945963b46
- https://access.redhat.com/errata/RHSA-2024:5256
- https://access.redhat.com/errata/RHSA-2024:5257
- https://access.redhat.com/errata/RHSA-2024:5928
- https://access.redhat.com/errata/RHSA-2024:6268
- https://access.redhat.com/errata/RHSA-2024:6267
- https://access.redhat.com/errata/RHSA-2024:7001
- https://access.redhat.com/errata/RHSA-2024:7000
- https://bugzilla.redhat.com/show_bug.cgi?id=2297562
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-40978
- https://nvd.nist.gov/vuln/detail/CVE-2024-40978
- https://launchpad.net/bugs/cve/CVE-2024-40978
- https://security-tracker.debian.org/tracker/CVE-2024-40978
- https://ubuntu.com/security/CVE-2024-40978
- https://git.kernel.org/linus/28027ec8e32ecbadcd67623edb290dad61e735b5
- https://www.ibm.com/support/pages/node/7230443 (Advisory)
Frequently Asked Questions
What is the severity of CVE-2024-40978?
CVE-2024-40978 has been classified as a critical vulnerability due to its potential to cause crashes in the Linux kernel.
How do I fix CVE-2024-40978?
To fix CVE-2024-40978, update your Linux kernel to one of the following versions: 4.19.317, 5.4.279, 5.10.221, 5.15.162, 6.1.96, 6.6.36, 6.9.7, 6.10 or specific Debian versions.
Which Linux distributions are affected by CVE-2024-40978?
The affected distributions include Red Hat and Debian based systems that use vulnerable versions of the Linux kernel.
What is the impact of CVE-2024-40978?
CVE-2024-40978 can lead to system crashes when the qedi_dbg_do_not_recover_cmd_read() function is called and interacts with user pointers.
When was CVE-2024-40978 disclosed?
CVE-2024-40978 was disclosed as part of the regular updates to the Linux kernel addressing stability and security issues.
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