The xfer_secondary_pool function in drivers/char/random.c in the Linux kernel 2.4 before 2.4.35 performs reseed operations on only the first few bytes of a buffer, which might make it easier for attackers to predict the output of the random number generator, related to incorrect use of the sizeof operator
Published Aug 13, 2007
6.8
MEDIUMCVSS 2.0
EPSS 1.73%
Description
The xfer_secondary_pool function in drivers/char/random.c in the Linux kernel 2.4 before 2.4.35 performs reseed operations on only the first few bytes of a buffer, which might make it easier for attackers to predict the output of the random number generator, related to incorrect use of the sizeof operator.
Affected products
No data.
- ≤ 2.4.34
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (16 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.73% (0.01729) | 76.75th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.73% (0.01729) | 74.55th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.61% (0.00606) | 67.77th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.35% (0.00354) | 72.84th | v3 (v2023.03.01) |
| Jun 16, 2024 | 0.41% (0.00409) | 73.92th | v3 (v2023.03.01) |
| May 9, 2024 | 0.42% (0.00418) | 74.05th | v3 (v2023.03.01) |
| Apr 1, 2024 | 0.43% (0.00429) | 74.00th | v3 (v2023.03.01) |
| Feb 21, 2024 | 0.46% (0.00456) | 74.59th | v3 (v2023.03.01) |
| Jan 15, 2024 | 0.46% (0.00456) | 72.57th | v3 (v2023.03.01) |
| Nov 8, 2023 | 0.40% (0.00404) | 70.77th | v3 (v2023.03.01) |
| Aug 19, 2023 | 0.38% (0.00382) | 69.56th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.39% (0.00388) | 69.01th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.18% (0.01183) | 61.76th | v2 (v2022.01.01) |
| Oct 19, 2022 | 1.18% (0.01183) | 60.79th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.18% (0.01183) | 58.77th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.18% (0.01183) | 35.15th | v2 (v2022.01.01) |
References (8)
- http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.4.34.y.git%3Ba=commit%3Bh=bd67d4c7b11cc33ebdc346bc8926d255b354cd64 x_refsource_CONFIRM
- http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.4.34.y.git%3Ba=commit%3Bh=faa3369ac2ea7feb0dd266b6a5e8d6ab153cf925 x_refsource_CONFIRM
- http://secunia.com/advisories/29058 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://www.debian.org/security/2008/dsa-1503 vendor-advisoryx_refsource_DEBIAN
- http://www.kernel.org/pub/linux/kernel/v2.4/ChangeLog-2.4.34.6 x_refsource_CONFIRM
- http://www.kernel.org/pub/linux/kernel/v2.4/ChangeLog-2.4.35 x_refsource_CONFIRM
- http://www.securityfocus.com/bid/25029 vdb-entryx_refsource_BID
- http://www.vupen.com/english/advisories/2007/2690 vdb-entryx_refsource_VUPENVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.4.34.y.git%3Ba=commit%3Bh=bd67d4c7b11cc33ebdc346bc8926d255b354cd64 | x_refsource_CONFIRM | |
| http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.4.34.y.git%3Ba=commit%3Bh=faa3369ac2ea7feb0dd266b6a5e8d6ab153cf925 | x_refsource_CONFIRM | |
| http://secunia.com/advisories/29058 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://www.debian.org/security/2008/dsa-1503 | vendor-advisoryx_refsource_DEBIAN | |
| http://www.kernel.org/pub/linux/kernel/v2.4/ChangeLog-2.4.34.6 | x_refsource_CONFIRM | |
| http://www.kernel.org/pub/linux/kernel/v2.4/ChangeLog-2.4.35 | x_refsource_CONFIRM | |
| http://www.securityfocus.com/bid/25029 | vdb-entryx_refsource_BID | |
| http://www.vupen.com/english/advisories/2007/2690 | vdb-entryx_refsource_VUPENVendor Advisory |
Change history (0)
No recorded changes yet.