glibc: uncontrolled recursion in function check_dst_limits_calc_pos_1 in posix/regexec.c
Published Feb 26, 2019
7.5
HIGHCVSS 3.0
EPSS 2.43%
Description
In the GNU C Library (aka glibc or libc6) through 2.29, check_dst_limits_calc_pos_1 in posix/regexec.c has Uncontrolled Recursion, as demonstrated by '(|)(\\1\\1)*' in grep, a different issue than CVE-2018-20796. NOTE: the software maintainer disputes that this is a vulnerability because the behavior occurs only with a crafted pattern
Affected products
No data.
No data.
Red Hat Enterprise Linux 6
glibc
Not affected
Red Hat Enterprise Linux 7
glibc
Not affected
Red Hat Enterprise Linux 8
glibc
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | glibc | Not affected | n/a |
| Red Hat Enterprise Linux 7 | glibc | Not affected | n/a |
| Red Hat Enterprise Linux 8 | glibc | Not affected | n/a |
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.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L
AV:N/AC:L/Au:N/C:N/I:N/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
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.43% (0.02427) | 83.64th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.45% (0.02447) | 82.18th | v5 (v2026.06.15) |
| May 28, 2026 | 2.31% (0.02309) | 85.01th | v4 (v2025.03.14) |
| Jul 20, 2024 | 0.11% (0.00108) | 44.19th | v3 (v2023.03.01) |
| Jun 27, 2024 | 0.11% (0.00108) | 44.03th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.11% (0.00108) | 42.03th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.89% (0.00885) | 24.24th | v2 (v2022.01.01) |
| Feb 4, 2022 | 4.50% (0.04499) | 74.08th | v2 (v2022.01.01) |
| Feb 3, 2022 | 2.74% (0.02742) | 63.06th | v5 (v2026.06.15) |
| Jan 6, 2022 | 2.74% (0.02742) | 62.72th | v1 |
| Sep 1, 2021 | 0.62% (0.00624) | 45.04th | v1 |
| Apr 14, 2021 | 0.62% (0.00624) | 0.00th | v1 |
References (6)
- https://access.redhat.com/security/cve/CVE-2019-9192 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1684374 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2019-9192
- https://sourceware.org/bugzilla/show_bug.cgi?id=24269 x_refsource_MISCExploitIssue TrackingThird Party Advisory
- https://support.f5.com/csp/article/K26346590?utm_source=f5support&%3Butm_medium=RSS x_refsource_CONFIRM
- https://www.cve.org/CVERecord?id=CVE-2019-9192
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2019-9192 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1684374 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2019-9192 | ||
| https://sourceware.org/bugzilla/show_bug.cgi?id=24269 | x_refsource_MISCExploitIssue TrackingThird Party Advisory | |
| https://support.f5.com/csp/article/K26346590?utm_source=f5support&%3Butm_medium=RSS | x_refsource_CONFIRM | |
| https://www.cve.org/CVERecord?id=CVE-2019-9192 |
Change history (0)
No recorded changes yet.