CVE-2024-26785
published 2024-04-04CVE-2024-26785: In the Linux kernel, the following vulnerability has been resolved: iommufd: Fix protection fault in iommufd_test_syz_conv_iova Syzkaller reported the…
PriorityP418medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.23%
13.4th percentile
In the Linux kernel, the following vulnerability has been resolved:
iommufd: Fix protection fault in iommufd_test_syz_conv_iova
Syzkaller reported the following bug:
general protection fault, probably for non-canonical address 0xdffffc0000000038: 0000 [#1] SMP KASAN
KASAN: null-ptr-deref in range [0x00000000000001c0-0x00000000000001c7]
Call Trace:
lock_acquire
lock_acquire+0x1ce/0x4f0
down_read+0x93/0x4a0
iommufd_test_syz_conv_iova+0x56/0x1f0
iommufd_test_access_rw.isra.0+0x2ec/0x390
iommufd_test+0x1058/0x1e30
iommufd_fops_ioctl+0x381/0x510
vfs_ioctl
__do_sys_ioctl
__se_sys_ioctl
__x64_sys_ioctl+0x170/0x1e0
do_syscall_x64
do_syscall_64+0x71/0x140
This is because the new iommufd_access_change_ioas() sets access->ioas to
NULL during its process, so the lock might be gone in a concurrent racing
context.
Fix this by doing the same access->ioas sanity as iommufd_access_rw() and
iommufd_access_pin_pages() functions do.
Affected
11 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.7.9-1 (forky) | linux 6.7.9-1 (forky) |
| linux | linux | — | — |
| linux | linux | >= 9227da7816dd1a42e20d41e2244cb63c205477ca < fd4d5cd7a2e8f08357c9bfc0905957cffe8ce568 | fd4d5cd7a2e8f08357c9bfc0905957cffe8ce568 |
| linux | linux | >= 9227da7816dd1a42e20d41e2244cb63c205477ca < fc719ecbca45c9c046640d72baddba3d83e0bc0b | fc719ecbca45c9c046640d72baddba3d83e0bc0b |
| linux | linux | >= 9227da7816dd1a42e20d41e2244cb63c205477ca < cf7c2789822db8b5efa34f5ebcf1621bc0008d48 | cf7c2789822db8b5efa34f5ebcf1621bc0008d48 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 6.7.9-1 | 6.7.9-1 |
| linux | linux_kernel | >= 0 < 6.7.9-1 | 6.7.9-1 |
| linux | linux_kernel | >= 6.6 < 6.7.9 | 6.7.9 |
| msrc | azl3_kernel_6.6.85.1-1_on_azure_linux_3.0 | — | — |
| msrc | azl3_kernel_6.6.92.2-1_on_azure_linux_3.0 | — | — |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_debian5.5LOW
vendor_msrc5.5MEDIUM
vendor_redhat5.5MEDIUM
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Microsoft
iommufd: Fix protection fault in iommufd_test_syz_conv_iova
vendor_msrc·2024-04-09·CVSS 5.5
CVE-2024-26785 [MEDIUM] CWE-120 iommufd: Fix protection fault in iommufd_test_syz_conv_iova
iommufd: Fix protection fault in iommufd_test_syz_conv_iova
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Mariner: Mariner
Linux: Linux
Customer Action Required: Yes
Remediation: CBL-Mariner Releases
Reference: https://l
Red Hat
kernel: iommufd: Fix protection fault in iommufd_test_syz_conv_iova
vendor_redhat·2024-04-04·CVSS 5.5
CVE-2024-26785 [MEDIUM] CWE-400 kernel: iommufd: Fix protection fault in iommufd_test_syz_conv_iova
kernel: iommufd: Fix protection fault in iommufd_test_syz_conv_iova
In the Linux kernel, the following vulnerability has been resolved:
iommufd: Fix protection fault in iommufd_test_syz_conv_iova
Syzkaller reported the following bug:
general protection fault, probably for non-canonical address 0xdffffc0000000038: 0000 [#1] SMP KASAN
KASAN: null-ptr-deref in range [0x00000000000001c0-0x00000000000001c7]
Call Trace:
lock_acquire
lock_acquire+0x1ce/0x4f0
down_read+0x93/0x4a0
iommufd_test_syz_conv_iova+0x56/0x1f0
iommufd_test_access_rw.isra.0+0x2ec/0x390
iommufd_test+0x1058/0x1e30
iommufd_fops_ioctl+0x381/0x510
vfs_ioctl
__do_sys_ioctl
__se_sys_ioctl
__x64_sys_ioctl+0x170/0x1e0
do_syscall_x64
do_syscall_64+0x71/0x140
This is because the new iommufd_access_change_ioas() sets access->ioas to
NU
Debian
CVE-2024-26785: linux - In the Linux kernel, the following vulnerability has been resolved: iommufd: Fi...
vendor_debian·2024·CVSS 5.5
CVE-2024-26785 [MEDIUM] CVE-2024-26785: linux - In the Linux kernel, the following vulnerability has been resolved: iommufd: Fi...
In the Linux kernel, the following vulnerability has been resolved: iommufd: Fix protection fault in iommufd_test_syz_conv_iova Syzkaller reported the following bug: general protection fault, probably for non-canonical address 0xdffffc0000000038: 0000 [#1] SMP KASAN KASAN: null-ptr-deref in range [0x00000000000001c0-0x00000000000001c7] Call Trace: lock_acquire lock_acquire+0x1ce/0x4f0 down_read+0x93/0x4a0 iommufd_test_syz_conv_iova+0x56/0x1f0 iommufd_test_access_rw.isra.0+0x2ec/0x390 iommufd_test+0x1058/0x1e30 iommufd_fops_ioctl+0x381/0x510 vfs_ioctl __do_sys_ioctl __se_sys_ioctl __x64_sys_ioctl+0x170/0x1e0 do_syscall_x64 do_syscall_64+0x71/0x140 This is because the new iommufd_access_change_ioas() sets access->ioas to NULL during its process, so the lock might be gone in a concurrent raci
GHSA
GHSA-pjr2-pwcr-ffrh: In the Linux kernel, the following vulnerability has been resolved:
iommufd: Fix protection fault in iommufd_test_syz_conv_iova
Syzkaller reported t
ghsa_unreviewed·2024-04-04
CVE-2024-26785 [MEDIUM] CWE-120 GHSA-pjr2-pwcr-ffrh: In the Linux kernel, the following vulnerability has been resolved:
iommufd: Fix protection fault in iommufd_test_syz_conv_iova
Syzkaller reported t
In the Linux kernel, the following vulnerability has been resolved:
iommufd: Fix protection fault in iommufd_test_syz_conv_iova
Syzkaller reported the following bug:
general protection fault, probably for non-canonical address 0xdffffc0000000038: 0000 [#1] SMP KASAN
KASAN: null-ptr-deref in range [0x00000000000001c0-0x00000000000001c7]
Call Trace:
lock_acquire
lock_acquire+0x1ce/0x4f0
down_read+0x93/0x4a0
iommufd_test_syz_conv_iova+0x56/0x1f0
iommufd_test_access_rw.isra.0+0x2ec/0x390
iommufd_test+0x1058/0x1e30
iommufd_fops_ioctl+0x381/0x510
vfs_ioctl
__do_sys_ioctl
__se_sys_ioctl
__x64_sys_ioctl+0x170/0x1e0
do_syscall_x64
do_syscall_64+0x71/0x140
This is because the new iommufd_access_change_ioas() sets access->ioas to
NULL during its process, so the lock might be gone in a concurrent
OSV
CVE-2024-26785: In the Linux kernel, the following vulnerability has been resolved: iommufd: Fix protection fault in iommufd_test_syz_conv_iova Syzkaller reported the
osv·2024-04-04·CVSS 5.5
CVE-2024-26785 [MEDIUM] CVE-2024-26785: In the Linux kernel, the following vulnerability has been resolved: iommufd: Fix protection fault in iommufd_test_syz_conv_iova Syzkaller reported the
In the Linux kernel, the following vulnerability has been resolved: iommufd: Fix protection fault in iommufd_test_syz_conv_iova Syzkaller reported the following bug: general protection fault, probably for non-canonical address 0xdffffc0000000038: 0000 [#1] SMP KASAN KASAN: null-ptr-deref in range [0x00000000000001c0-0x00000000000001c7] Call Trace: lock_acquire lock_acquire+0x1ce/0x4f0 down_read+0x93/0x4a0 iommufd_test_syz_conv_iova+0x56/0x1f0 iommufd_test_access_rw.isra.0+0x2ec/0x390 iommufd_test+0x1058/0x1e30 iommufd_fops_ioctl+0x381/0x510 vfs_ioctl __do_sys_ioctl __se_sys_ioctl __x64_sys_ioctl+0x170/0x1e0 do_syscall_x64 do_syscall_64+0x71/0x140 This is because the new iommufd_access_change_ioas() sets access->ioas to NULL during its process, so the lock might be gone in a concurrent raci
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/cf7c2789822db8b5efa34f5ebcf1621bc0008d48https://git.kernel.org/stable/c/fc719ecbca45c9c046640d72baddba3d83e0bc0bhttps://git.kernel.org/stable/c/fd4d5cd7a2e8f08357c9bfc0905957cffe8ce568https://git.kernel.org/stable/c/cf7c2789822db8b5efa34f5ebcf1621bc0008d48https://git.kernel.org/stable/c/fc719ecbca45c9c046640d72baddba3d83e0bc0b
2024-04-04
Published