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TI-2024-06124 Aliases CVE-2024-6603GHSA-j476-hf2q-984g

Memory corruption in thread creation

Priority LOW 35CWE-823Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
—
Confidentiality · integrity · availability
High · High · None
Fix status
Partial Red Hat: 14 fixed, 2 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat.

Summary

In an out-of-memory scenario an allocation could fail but free would have been called on the pointer afterwards leading to memory corruption. This vulnerability affects Firefox < 128, Firefox ESR < 115.13, Thunderbird < 115.13, and Thunderbird < 128.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00537 45th percentileScored 2026-11-07
Fix Partial Firefox (Mozilla): 128Firefox ESR (Mozilla): 115.13+1 more productRed Hat: 17 advisoriesRed Hat: 14 fixed, 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MozillaFirefoxbefore 128128Patch availableCNA
MozillaFirefox ESRbefore 115.13115.13Patch availableCNA
MozillaThunderbirdbefore 115.13115.13Patch availableCNA
MozillaThunderbirdbefore 128128Patch availableCNA
  • Firefox VendorMozilla Affected before 128 Fixed in 128 Patch available CNA
  • Firefox ESR VendorMozilla Affected before 115.13 Fixed in 115.13 Patch available CNA
  • Thunderbird VendorMozilla Affected before 115.13 Fixed in 115.13 Patch available CNA
  • Thunderbird VendorMozilla Affected before 128 Fixed in 128 Patch available CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*before 115.13VulnerableMozilla
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*before 128.0VulnerableMozilla
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*before 115.13; 116.0 to before 128.0VulnerableMozilla
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:* Versions before 115.13 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions before 128.0 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* Versions before 115.13; 116.0 to before 128.0 Vulnerable ·Mozilla

Remediation

  • Fix · CNA Firefox (Mozilla) Fixed in 128
  • Fix · CNA Firefox ESR (Mozilla) Fixed in 115.13
  • Fix · CNA Thunderbird (Mozilla) Fixed in 115.13
  • Fix · CNA Thunderbird (Mozilla) Fixed in 128

Red Hat 17 advisories

  • RHSA-2024:4894 Released 2024-07-29 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream AUS (v.8.6) thunderbird-115.13.0-3.el8_6
    • Red Hat Enterprise Linux AppStream E4S (v.8.6) thunderbird-115.13.0-3.el8_6
    • Red Hat Enterprise Linux AppStream TUS (v.8.6) thunderbird-115.13.0-3.el8_6
  • RHSA-2024:4718 Released 2024-07-23 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.8) thunderbird-115.13.0-3.el8_8
  • RHSA-2024:4717 Released 2024-07-23 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream AUS (v. 8.2) thunderbird-115.13.0-3.el8_2
Show 14 more Red Hat advisories
  • RHSA-2024:4670 Released 2024-07-22 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.2) thunderbird-115.13.0-3.el9_2
  • RHSA-2024:4673 Released 2024-07-22 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.2) firefox-115.13.0-3.el9_2, firefox-x11-115.13.0-3.el9_2
  • RHSA-2024:4671 Released 2024-07-22 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream AUS (v.8.4) thunderbird-115.13.0-3.el8_4
    • Red Hat Enterprise Linux AppStream E4S (v.8.4) thunderbird-115.13.0-3.el8_4
    • Red Hat Enterprise Linux AppStream TUS (v.8.4) thunderbird-115.13.0-3.el8_4
  • RHSA-2024:4635 Released 2024-07-18 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream (v. 8) thunderbird-115.13.0-3.el8_10
  • RHSA-2024:4634 Released 2024-07-18 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream AUS (v.8.6) firefox-115.13.0-3.el8_6
    • Red Hat Enterprise Linux AppStream E4S (v.8.6) firefox-115.13.0-3.el8_6
    • Red Hat Enterprise Linux AppStream TUS (v.8.6) firefox-115.13.0-3.el8_6
  • RHSA-2024:4624 Released 2024-07-18 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream (v. 9) thunderbird-115.13.0-3.el9_4
  • RHSA-2024:4625 Released 2024-07-18 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.0) thunderbird-115.13.0-3.el9_0
  • RHSA-2024:4610 Released 2024-07-18 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream AUS (v.8.4) firefox-115.13.0-3.el8_4
    • Red Hat Enterprise Linux AppStream E4S (v.8.4) firefox-115.13.0-3.el8_4
    • Red Hat Enterprise Linux AppStream TUS (v.8.4) firefox-115.13.0-3.el8_4
  • RHSA-2024:4590 Released 2024-07-17 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.8) firefox-115.13.0-3.el8_8
  • RHSA-2024:4586 Released 2024-07-17 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream AUS (v. 8.2) firefox-115.13.0-3.el8_2
  • RHSA-2024:4517 Released 2024-07-11 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream (v. 8) firefox-115.13.0-3.el8_10
  • RHSA-2024:4508 Released 2024-07-11 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux Server (v. 7 ELS) firefox-115.13.0-3.el7_9
    • Red Hat Enterprise Linux Server Optional (v. 7 ELS) firefox-115.13.0-3.el7_9
  • RHSA-2024:4500 Released 2024-07-11 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream (v. 9) firefox-115.13.0-3.el9_4, firefox-x11-115.13.0-3.el9_4
  • RHSA-2024:4501 Released 2024-07-11 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.0) firefox-115.13.0-3.el9_0

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Mozilla Firefox 128

    16 records Highest priority Priority MEDIUM 4 MEDIUM, 12 LOW

    Other records, highest priority first

    • TI-2024-06123 Memory corruption in NSSPriority MEDIUM 51
    • TI-2024-06132 Incorrect handling of SameSite cookiesPriority MEDIUM 50
    • TI-2024-06128 Leaving pointerlock by pressing the escape key could be preventedPriority MEDIUM 41
    Show all 16 records →
  • Release ·

    Mozilla Thunderbird 128

    15 records Highest priority Priority MEDIUM 3 MEDIUM, 12 LOW

    Other records, highest priority first

    • TI-2024-06123 Memory corruption in NSSPriority MEDIUM 51
    • TI-2024-06132 Incorrect handling of SameSite cookiesPriority MEDIUM 50
    • TI-2024-06128 Leaving pointerlock by pressing the escape key could be preventedPriority MEDIUM 41
    Show all 15 records →
Show 1 more group
  • Release ·

    Mozilla Firefox ESR, Thunderbird 115.13

    5 records Highest priority Priority MEDIUM 1 MEDIUM, 4 LOW

    Other records, highest priority first

    • TI-2024-06123 Memory corruption in NSSPriority MEDIUM 51
    • TI-2024-06125 Memory safety bugs fixed in Firefox 128, Firefox ESR 115.13, Thunderbird 128, and Thunderbird 115.13Priority LOW 36
    • TI-2024-06121 Memory corruption in WebGL APIPriority LOW 28
    Show all 5 records →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 7AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2024:4517, RHSA-2024:4635
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2024:4500, RHSA-2024:4624
Red Hat Enterprise Linux AppStream AUS (v. 8.2)Fixed RHSA-2024:4586, RHSA-2024:4717
Red Hat Enterprise Linux AppStream AUS (v.8.4)Fixed RHSA-2024:4610, RHSA-2024:4671
Red Hat Enterprise Linux AppStream AUS (v.8.6)Fixed RHSA-2024:4634, RHSA-2024:4894
Red Hat Enterprise Linux AppStream E4S (v.8.4)Fixed RHSA-2024:4610, RHSA-2024:4671
Red Hat Enterprise Linux AppStream E4S (v.8.6)Fixed RHSA-2024:4634, RHSA-2024:4894
Red Hat Enterprise Linux AppStream E4S (v.9.0)Fixed RHSA-2024:4501, RHSA-2024:4625
Red Hat Enterprise Linux AppStream EUS (v.8.8)Fixed RHSA-2024:4590, RHSA-2024:4718
Red Hat Enterprise Linux AppStream EUS (v.9.2)Fixed RHSA-2024:4670, RHSA-2024:4673
Red Hat Enterprise Linux AppStream TUS (v.8.4)Fixed RHSA-2024:4610, RHSA-2024:4671
Red Hat Enterprise Linux AppStream TUS (v.8.6)Fixed RHSA-2024:4634, RHSA-2024:4894
Red Hat Enterprise Linux Server (v. 7 ELS)Fixed RHSA-2024:4508
Red Hat Enterprise Linux Server Optional (v. 7 ELS)Fixed RHSA-2024:4508

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-6603
  2. 2026-10-03 Alias added: GHSA-j476-hf2q-984g

References

Advisory 4

Other 1

  • TI-2024-08981 Use after free in Mozilla Firefox KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-09832 Use after free in Mozilla Firefox KEVCVSS 3.1CRITICAL 9.6
  • TI-2019-08769 Improper input validation in Mozilla Firefox ESR KEVCVSS 3.1CRITICAL 10.0
  • TI-2010-03577 Mozilla Firefox 3.5.x through 3.5.14 and 3.6.x through 3.6.11, Thunderbird 3.1.6 before… KEVCVSS 3.1CRITICAL 9.8
  • TI-2023-04799 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
  • TI-2023-04477 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
See all 3444 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences