CVE-2024-35798
published 2024-05-17CVE-2024-35798: In the Linux kernel, the following vulnerability has been resolved: btrfs: fix race in read_extent_buffer_pages() There are reports from tree-checker that…
PriorityP418medium4.7CVSS 3.1
AVLACHPRLUINSUCNINAH
EPSS
0.18%
7.5th percentile
In the Linux kernel, the following vulnerability has been resolved:
btrfs: fix race in read_extent_buffer_pages()
There are reports from tree-checker that detects corrupted nodes,
without any obvious pattern so possibly an overwrite in memory.
After some debugging it turns out there's a race when reading an extent
buffer the uptodate status can be missed.
To prevent concurrent reads for the same extent buffer,
read_extent_buffer_pages() performs these checks:
/* (1) */
if (test_bit(EXTENT_BUFFER_UPTODATE, &eb->bflags))
return 0;
/* (2) */
if (test_and_set_bit(EXTENT_BUFFER_READING, &eb->bflags))
goto done;
At this point, it seems safe to start the actual read operation. Once
that completes, end_bbio_meta_read() does
/* (3) */
set_extent_buffer_uptodate(eb);
/* (4) */
clear_bit(EXTENT_BUFFER_READING, &eb->bflags);
Normally, this is enough to ensure only one read happens, and all other
callers wait for it to finish before returning. Unfortunately, there is
a racey interleaving:
Thread A | Thread B | Thread C
---------+----------+---------
(1) | |
| (1) |
(2) | |
(3) | |
(4) | |
| (2) |
| | (1)
When this happens, thread B kicks of an unnecessary read. Worse, thread
C will see UPTODATE set and return immediately, while the read from
thread B is still in progress. This race could result in tree-checker
errors like this as the extent buffer is concurrently modified:
BTRFS critical (device dm-0): corrupted node, root=256
block=8550954455682405139 owner mismatch, have 11858205567642294356
expect [256, 18446744073709551360]
Fix it by testing UPTODATE again after setting the READING bit, and if
it's been set, skip the unnecessary read.
[ minor update of changelog ]
Affected
13 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.7.12-1 (forky) | linux 6.7.12-1 (forky) |
| linux | linux | — | — |
| linux | linux | >= d7172f52e9933b6ec9305e7fe6e829e3939dba04 < 0427c8ef8bbb7f304de42ef51d69c960e165e052 | 0427c8ef8bbb7f304de42ef51d69c960e165e052 |
| linux | linux | >= d7172f52e9933b6ec9305e7fe6e829e3939dba04 < 3a25878a3378adce5d846300c9570f15aa7f7a80 | 3a25878a3378adce5d846300c9570f15aa7f7a80 |
| linux | linux | >= d7172f52e9933b6ec9305e7fe6e829e3939dba04 < 2885d54af2c2e1d910e20d5c8045bae40e02fbc1 | 2885d54af2c2e1d910e20d5c8045bae40e02fbc1 |
| linux | linux | >= d7172f52e9933b6ec9305e7fe6e829e3939dba04 < ef1e68236b9153c27cb7cf29ead0c532870d4215 | ef1e68236b9153c27cb7cf29ead0c532870d4215 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 6.7.12-1 | 6.7.12-1 |
| linux | linux_kernel | >= 0 < 6.7.12-1 | 6.7.12-1 |
| linux | linux_kernel | >= 0 < 6.8.0-35.35 | 6.8.0-35.35 |
| linux | linux_kernel | >= 6.5 < 6.6.24 | 6.6.24 |
| linux | linux_kernel | >= 6.7 < 6.7.12 | 6.7.12 |
| linux | linux_kernel | >= 6.8 < 6.8.3 | 6.8.3 |
CVSS provenance
nvdv3.14.7MEDIUMCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_ubuntu6.3MEDIUM
vendor_debian4.7LOW
vendor_redhat4.7MEDIUM
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properly handle certain error conditions, leading to a NULL pointer
dereference. A local attacker could possibly trigger this vulnerability to
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Zheng Wang discovered that the Broadcom FullMAC WLAN driver in the Linux
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Red Hat
kernel: btrfs: fix race in read_extent_buffer_pages()
vendor_redhat·2024-05-17·CVSS 4.7
CVE-2024-35798 [MEDIUM] kernel: btrfs: fix race in read_extent_buffer_pages()
kernel: btrfs: fix race in read_extent_buffer_pages()
In the Linux kernel, the following vulnerability has been resolved:
btrfs: fix race in read_extent_buffer_pages()
There are reports from tree-checker that detects corrupted nodes,
without any obvious pattern so possibly an overwrite in memory.
After some debugging it turns out there's a race when reading an extent
buffer the uptodate status can be missed.
To prevent concurrent reads for the same extent buffer,
read_extent_buffer_pages() performs these checks:
/* (1) */
if (test_bit(EXTENT_BUFFER_UPTODATE, &eb->bflags))
return 0;
/* (2) */
if (test_and_set_bit(EXTENT_BUFFER_READING, &eb->bflags))
goto done;
At this point, it seems safe to start the actual read operation. Once
that completes, end_bbio_meta_read() does
/* (3) */
set_exten
Debian
CVE-2024-35798: linux - In the Linux kernel, the following vulnerability has been resolved: btrfs: fix ...
vendor_debian·2024·CVSS 4.7
CVE-2024-35798 [MEDIUM] CVE-2024-35798: linux - In the Linux kernel, the following vulnerability has been resolved: btrfs: fix ...
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix race in read_extent_buffer_pages() There are reports from tree-checker that detects corrupted nodes, without any obvious pattern so possibly an overwrite in memory. After some debugging it turns out there's a race when reading an extent buffer the uptodate status can be missed. To prevent concurrent reads for the same extent buffer, read_extent_buffer_pages() performs these checks: /* (1) */ if (test_bit(EXTENT_BUFFER_UPTODATE, &eb->bflags)) return 0; /* (2) */ if (test_and_set_bit(EXTENT_BUFFER_READING, &eb->bflags)) goto done; At this point, it seems safe to start the actual read operation. Once that completes, end_bbio_meta_read() does /* (3) */ set_extent_buffer_uptodate(eb); /* (4) */ clear_bit(EXTENT_BUFFE
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properly handle certain error conditions, leading to a NULL pointer
dereference. A local attacker could possibly trigger this vulnerability to
cause a denial of service. (CVE-2022-38096)
Zheng Wang discovered that the Broadcom FullMAC WLAN driver in the Linux
kernel contained a race condition during device removal, leading to a use-
after-free vulnerability. A physically proximate attacker could possibly
use this to cause a denial of service (system crash). (CVE-2023-47233)
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dereference. A local attacker could possibly trigger this vulnerability to
cause a denial of service. (CVE-2022-38096)
Zheng Wang discovered that the Broadcom FullMAC WLAN driver in the Linux
kernel contained a race condition during device removal, leading to a use-
after-free vulnerability. A physically proximate attacker could possibly
use this to cause a denial of service (system crash). (CVE-2023-47233)
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properly handle certain error conditions, leading to a NULL pointer
dereference. A local attacker could possibly trigger this vulnerability to
cause a denial of service. (CVE-2022-38096)
Zheng Wang discovered that the Broadcom FullMAC WLAN driver in the Linux
kernel contained a race condition during device removal, leading to a use-
after-free vulnerability. A physically proximate attacker could possibly
use this to cause a denial of service (system crash). (CVE-2023-47233)
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properly handle certain error conditions, leading to a NULL pointer
dereference. A local attacker could possibly trigger this vulnerability to
cause a denial of service. (CVE-2022-38096)
Zheng Wang discovered that the Broadcom FullMAC WLAN driver in the Linux
kernel contained a race condition during device removal, leading to a use-
after-free vulnerability. A physically proximate attacker could possibly
use this to cause a denial of service (system crash). (CVE-2023-47233)
It was discovered that the ATA over Ethernet (AoE) driver in the Linux
kernel contained a race condition, leading to a use-after-free
vulnerability. An attacker could use this to
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Ziming Zhang discovered that the DRM driver for VMware Virtual GPU did not
properly handle certain error conditions, leading to a NULL pointer
dereference. A local attacker could possibly trigger this vulnerability to
cause a denial of service. (CVE-2022-38096)
Zheng Wang discovered that the Broadcom FullMAC WLAN driver in the Linux
kernel contained a race condition during device removal, leading to a use-
after-free vulnerability. A physically proximate attacker could possibly
use this to cause a denial of service (system crash). (CVE-2023-47233)
It was discovered that the ATA over Ethernet (AoE) driver in the Linux
kernel contained a race condition, leading to a use-after-free
vulnerability. An attacker could use this to cause a denial of service o
GHSA
GHSA-w9qv-8mcj-wh8f: In the Linux kernel, the following vulnerability has been resolved:
btrfs: fix race in read_extent_buffer_pages()
There are reports from tree-checke
ghsa_unreviewed·2024-05-17
CVE-2024-35798 [MEDIUM] CWE-362 GHSA-w9qv-8mcj-wh8f: In the Linux kernel, the following vulnerability has been resolved:
btrfs: fix race in read_extent_buffer_pages()
There are reports from tree-checke
In the Linux kernel, the following vulnerability has been resolved:
btrfs: fix race in read_extent_buffer_pages()
There are reports from tree-checker that detects corrupted nodes,
without any obvious pattern so possibly an overwrite in memory.
After some debugging it turns out there's a race when reading an extent
buffer the uptodate status can be missed.
To prevent concurrent reads for the same extent buffer,
read_extent_buffer_pages() performs these checks:
/* (1) */
if (test_bit(EXTENT_BUFFER_UPTODATE, &eb->bflags))
return 0;
/* (2) */
if (test_and_set_bit(EXTENT_BUFFER_READING, &eb->bflags))
goto done;
At this point, it seems safe to start the actual read operation. Once
that completes, end_bbio_meta_read() does
/* (3) */
set_extent_buffer_uptodate(eb);
/* (4) */
clear_bit(EXTE
OSV
CVE-2024-35798: In the Linux kernel, the following vulnerability has been resolved: btrfs: fix race in read_extent_buffer_pages() There are reports from tree-checker
osv·2024-05-17·CVSS 4.7
CVE-2024-35798 [MEDIUM] CVE-2024-35798: In the Linux kernel, the following vulnerability has been resolved: btrfs: fix race in read_extent_buffer_pages() There are reports from tree-checker
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix race in read_extent_buffer_pages() There are reports from tree-checker that detects corrupted nodes, without any obvious pattern so possibly an overwrite in memory. After some debugging it turns out there's a race when reading an extent buffer the uptodate status can be missed. To prevent concurrent reads for the same extent buffer, read_extent_buffer_pages() performs these checks: /* (1) */ if (test_bit(EXTENT_BUFFER_UPTODATE, &eb->bflags)) return 0; /* (2) */ if (test_and_set_bit(EXTENT_BUFFER_READING, &eb->bflags)) goto done; At this point, it seems safe to start the actual read operation. Once that completes, end_bbio_meta_read() does /* (3) */ set_extent_buffer_uptodate(eb); /* (4) */ clear_bit(EXTENT_BUFFE
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/0427c8ef8bbb7f304de42ef51d69c960e165e052https://git.kernel.org/stable/c/2885d54af2c2e1d910e20d5c8045bae40e02fbc1https://git.kernel.org/stable/c/3a25878a3378adce5d846300c9570f15aa7f7a80https://git.kernel.org/stable/c/ef1e68236b9153c27cb7cf29ead0c532870d4215https://git.kernel.org/stable/c/0427c8ef8bbb7f304de42ef51d69c960e165e052https://git.kernel.org/stable/c/2885d54af2c2e1d910e20d5c8045bae40e02fbc1https://git.kernel.org/stable/c/3a25878a3378adce5d846300c9570f15aa7f7a80https://git.kernel.org/stable/c/ef1e68236b9153c27cb7cf29ead0c532870d4215
2024-05-17
Published